JP5172791B2 - Nasal assembly - Google Patents

Description

The present invention relates to nasal assemblies used for the treatment of sleep breathing disorders (SDB) by continuous positive airway pressure (CPAP) or non-invasive positive pressure ventilation (NPPV).
[Cross reference for conventional technology]
This application is filed on August 12, 2003, US Provisional Application No. 60 / 529,696, filed December 16, 2003, the entire contents of each of which is incorporated herein by reference. No. 60 / 494,119, No. 60 / 448,465 filed on Feb. 21, 2003, No. 60 / 482,872 filed Jun. 27, 2003, and Jul. 22, 2003. Claims the benefits of 60 / 488,810 submitted on the day.

  Some nasal assemblies used in the treatment of SDB are configured to be inserted into a patient's nasal cavity. Air or other breathable gas is supplied by the blower and is passed along the flexible conduit through the nasal assembly.

  A nasal assembly is typically a relatively rigid shell, such as a frame, and a pair of nozzles (nasal pillows, nasal prongs, cannulas, etc.) mounted on the rigid shell and configured to be inserted into the patient's nasal cavity. Or it may be in the form of a nasal puff). The nozzle is typically held in place using a headgear assembly, and a relatively rigid shell and headgear assembly are joined using some form of connector.

  One form of known nasal assembly is described in the prior art literature by Trimble et al. Trimble discloses a nasal puff assembly 20 comprising a nasal puff 22 configured to be mounted adjacent to the patient's nose, with a harness assembly 24 configured to be mounted over the patient's head. The harness assembly 24 is adjacent to the patient's nasal cavity and is configured to operably hold the puff 22 partially therein (see, for example, US Pat.

  The puff 22 is in the form of a substantially Y-shaped rigid hollow plenum chamber 28 with a pair of laterally spaced nostril elements 30. Adjustability of the nostril element 30 is provided by rotatably mounting the element 30 with the plenum chamber 28 and mounting the element 30 in the slot while allowing selective lateral positioning of the elements 30 relative to each other. May be. The harness assembly 24 may also be adjusted to adjust the fit and seal of the nostril element 30 during use. That is, the force required to maintain a sufficient seal is directly related to the force required to maintain the desired fit. Thus, fitting or stability adjustments of the nasal assembly directly affects the seal, which can adversely affect patient comfort.

  Other examples of nasal pillows or cannulas mounted on rigid shells are disclosed in two other prior art documents (see, for example, US Pat.

  A nasal mask assembly, or Spiritus, manufactured by Viasys includes a plenum chamber with a pair of adjacent or laterally spaced nostril elements. A harness assembly is engaged with the plenum chamber to adjust the fit and seal of the nostril element during use. Similar to Trimble, fitting or stability adjustment of the nasal assembly directly affects the seal, which can adversely affect patient comfort.

  Another prior art document, a nasal mask assembly manufactured by InnoMed, namely Nasal Aire, includes a plenum chamber with a pair of adjacent or laterally spaced nostril elements. The nostril element is configured to engage the mucosal surface or internal passage of the patient's nose to maintain the nasal mask assembly on the patient's face and provide a seal (see, for example, US Pat.

  According to yet another prior art document, a nasal mask assembly manufactured by Stevenson Industries, CPAP-Pro, includes an air supply tube having a tooth anchor, a platform, and a nasal pad, the platform supporting the air supply tube. ing. The tooth anchor is dimensioned to engage between teeth in the patient's mouth to hold the assembly in place (see, for example, US Pat.

  Yet another prior art document discloses a device comprising a gas transfer element placed in engagement with a patient's nose by a mouthpiece fitted to the patient's teeth (see, for example, US Pat. .

U.S. Pat. No. 4,782,832 US Pat. No. 5,724,965 US Pat. No. 6,431,172 US Pat. No. 5,533,506 US Pat. No. 6,012,455 International Application Publication No. WO 00/13751

  A common problem with known nasal assemblies, such as those discussed above, is patient comfort. For example, prongs tend to irritate the patient's nose because of the tensile force applied by the headgear assembly that pulls the rigid shell and prongs toward the patient's nose.

  Another problem is the achievement of a sealed fit with the patient's nasal cavity without sacrificing patient comfort.

  Another problem is irritation inside the patient's nostrils caused by contact with the prongs, for example the edges thereof.

  Another problem is irritation within the patient's nostril (air flow irritation) caused by an air jet from the prong.

  Another issue is the adjustment of the nasal assembly relative to the patient's nose and / or head to accommodate various shapes and angles of the patient's nose.

  Yet another problem is the direct link between sealing and stability forces that can affect patient comfort.

  One aspect of the present invention is directed to a nasal assembly that provides more comfort to the patient.

  Another aspect of the present invention is directed to a nasal assembly that allows effective sealing with a patient's nasal cavity. Preferably, the nasal assembly is directed to a nozzle assembly that includes a nozzle that comfortably contacts the outer edge of the nostril and avoids sensitive internal passages (eg, mucosal surfaces or internal passages) of the nasal cavity.

  Yet another aspect of the present invention is directed to a nasal assembly that does not rely on tensile forces from the headgear assembly to provide an effective seal between the nozzle and the patient's nasal cavity.

  Yet another aspect of the present invention is directed to an inconspicuous nasal assembly.

  Yet another aspect of the present invention is directed to a nasal assembly that is easy to use.

  Yet another aspect of the present invention is directed to a nasal assembly that maintains a headgear adjustment setting.

  Yet another aspect of the invention is directed to a nasal assembly that helps to separate sealing and stability forces. In particular, one aspect of the present invention is that the stabilizing force that acts to maintain the nasal assembly on the patient's face separates from the sealing force that acts to maintain a seal between the nasal assembly and the patient's face. It is intended to be a nasal assembly configured to be or at least more differentiated.

  Yet another aspect of the present invention is directed to a nasal assembly that allows a greater range of motion for the nozzle of the nasal assembly.

  Another aspect of the invention provides a nasal assembly for transferring breathable gas to a patient. The nasal assembly includes a frame having a main body and side frame members provided on each lateral side surface of the main body, and each side frame member includes a first connector portion formed integrally. The nozzle assembly includes a gusset or bottom portion and a pair of nozzles. The nozzle assembly is coupled to the main body of the frame by a pair of nozzles configured to sealingly engage the nasal cavity of the patient's nose during use. A pair of intake conduits is configured to transport breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are detachably and rotatably connected to each first connector portion of the frame. The second connector portion communicates with the intake conduit via an angle connector. A headgear assembly is removably connected with at least one of the second connector portion and the angle connector to maintain the frame and nozzle assembly in a desired adjusted position on the patient's face.

Other aspects, features and advantages of the present invention will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, which are a part of this disclosure and illustrate, by way of example, the principles of the invention. Let's go.
The accompanying drawings facilitate an understanding of the various embodiments of this invention.

FIG. 6 is a perspective view of a partial nasal assembly configured in accordance with an embodiment of the present invention mounted on a patient's head and engaged with a patient's nasal cavity. 2 is a front view of the frame of the nasal assembly shown in FIG. 1 with some parts removed for clarity. FIG. It is sectional drawing of the frame shown in FIG. It is a side view of the frame shown in FIG. FIG. 2 is a front view of a nozzle assembly of the nasal assembly shown in FIG. 1. FIG. 6 is a cross-sectional view of the nozzle assembly shown in FIG. 5. FIG. 6 is a side view of the nozzle assembly shown in FIG. 5. FIG. 6 is a side sectional view of the nozzle assembly shown in FIG. 5. FIG. 2 is a perspective view of the embodiment of the intake conduit and headgear connector assembly of the nasal assembly shown in FIG. 1. FIG. 10 is a rear perspective view of the intake conduit and headgear connector assembly shown in FIG. 9. FIG. 6 is a perspective view of another embodiment of an intake conduit and headgear connector assembly configured for use with the nasal assembly shown in FIG. 1. FIG. 12 is a rear perspective view of the intake conduit and headgear connector assembly shown in FIG. 11. FIG. 2 is a side view illustrating routing of an overhead intake conduit for the nasal assembly shown in FIG. 1. FIG. 2 is a side view showing the routing of the submandibular intake conduit for the nasal assembly shown in FIG. 1. FIG. 5 is a perspective view of a connector for use in routing an intake conduit that covers a patient's head. FIG. 6 is a perspective view of a connector for use in routing an intake conduit under a patient's chin. FIG. 2 is a perspective view showing a flow generator connector for use in connecting the nasal assembly shown in FIG. 1 with a pressurized supply. FIG. 2 is a side view of an embodiment of a headgear component for use with the nasal assembly shown in FIG. 1. 1 is a schematic diagram showing a patient's nose having a substantially flat nose wing angle. FIG. 1 is a schematic diagram showing a patient's nose with a substantially sharp nose wing angle. FIG. FIG. 3 is a schematic diagram illustrating an embodiment of a sealing zone of a nozzle. Figure 6 is a graph showing the average nasal opening / incident ratio. FIG. 6 is a schematic diagram illustrating an embodiment for calculating a bottom major axis of a nozzle. FIG. 6 is a schematic diagram illustrating an embodiment for calculating the bottom minor axis of a nozzle. FIG. 6 is a partial perspective view of another embodiment of a nasal assembly mounted on a patient's head and engaged with a patient's nasal cavity. FIG. 26 is a partial front perspective view of the nasal assembly shown in FIG. 25. FIG. 26 is a cross-sectional view of the nasal assembly shown in FIG. 25. FIG. 26 is a front perspective view of the frame of the nasal assembly shown in FIG. 25. FIG. 29 is a rear perspective view of the frame shown in FIG. 28. FIG. 26 is a partial front perspective view of half of the nozzle assembly of the nasal assembly shown in FIG. 25. FIG. 31 is a side cross-sectional view of the nozzle assembly shown in FIG. 30. FIG. 26 is a perspective view of an embodiment of the intake conduit and headgear connector assembly of the nasal assembly shown in FIG. 25. FIG. 33 is a rear perspective view of the intake conduit and headgear connector assembly shown in FIG. 32. FIG. 33 is a cross-sectional view of the intake conduit and headgear connector assembly shown in FIG. 32 having flexible arms at phantom lines. FIG. 26 is a perspective view of a flow generator connector for use in connecting a tube for use with the nasal assembly shown in FIG. 25 to a pressurized supply. FIG. 26 is a side view showing the routing of the intake conduit of the nasal assembly shown in FIG. 25. FIG. 26 is a side view of the nasal assembly shown in FIG. 25 attached to a patient's head. FIG. 6 is a perspective view of another embodiment of a nasal assembly attached to a patient's head and engaged with the patient's nasal cavity. FIG. 39 is a perspective view of the intake conduit and intake conduit and headgear connector assembly of the nasal assembly shown in FIG. 38. FIG. 39 is a perspective view of the nasal assembly shown in FIG. 38. FIG. 39 is a perspective view of the frame of the nasal assembly shown in FIG. 38. FIG. 39 is a perspective view of the nozzle assembly of the nasal assembly shown in FIG. 38. FIG. 42 is a perspective view of the nozzle assembly shown in FIG. 41 mounted on the frame shown in FIG. 40. FIG. 39 is a cross-sectional view of the nasal assembly shown in FIG. 38. FIG. 39 is a side cross-sectional view of the nasal assembly shown in FIG. 38. FIG. 39 is a side view of the nasal assembly shown in FIG. 38 mounted on a patient's head showing two intake configurations. FIG. 39 is a schematic force diagram illustrating some of the forces generated when the nasal assembly shown in FIG. 38 is worn on the patient's head. FIG. 6 is a cross-sectional view of an embodiment of an intake conduit engaged with an embodiment of an angle connector to transport breathable gas. FIG. 6 is a cross-sectional view illustrating another embodiment of an intake conduit. FIG. 6 is a perspective view of another embodiment of an intake conduit engaged with another embodiment of a flow generator connector to transport breathable gas. FIG. 6 is a perspective view of another embodiment of an intake conduit. FIG. 39 is a perspective view of an embodiment of the intake conduit of the nasal assembly shown in FIG. 38. FIG. 39 is a side view of the nasal assembly shown in FIG. 38 prior to engagement with the patient's nasal cavity. FIG. 39 is a front view of the nasal assembly (cross section) shown in FIG. 38 engaged with the patient's nasal cavity. FIG. 7 is a perspective view of another embodiment of a nasal assembly mounted on a patient's head and engaged with the patient's nasal cavity by the two illustrated intake configurations. FIG. 53 is a perspective view of the nasal assembly shown in FIG. 52. FIG. 53 is a cross-sectional view of the nozzle assembly engaged with the frame of the nasal assembly shown in FIG. 52. FIG. 53 is a perspective view of the intake conduit and headgear connector assembly of the nasal assembly shown in FIG. 52. FIG. 53 is a cross-sectional view of the intake conduit and headgear connector assembly of the nasal assembly shown in FIG. 52. FIG. 53 is a cross-sectional side view of the nasal assembly shown in FIG. 52 being engaged with a patient's nasal cavity. FIG. 53 is a front view of the nasal assembly (cross section) shown in FIG. 52 engaged with a patient's nasal cavity. FIG. 6 is a perspective view of another embodiment of a nasal assembly mounted on a patient's head and engaged with a patient's nasal cavity. FIG. 60 is a perspective view of the nasal assembly shown in FIG. 59 removed from the patient's head. FIG. 60 is an exploded view of a portion of the nasal assembly shown in FIG. 59 showing the frame, nozzle assembly and clips thereof. FIG. 60 is a perspective view of a portion of the nasal assembly shown in FIG. 59 showing the clip engaged with the frame and nozzle assembly. FIG. 60 is a perspective view of a portion of the nasal assembly shown in FIG. 59 showing the engagement between the frame, nozzle assembly and clip. FIG. 60 is a partial cross-sectional view of a portion of the nasal assembly shown in FIG. 59 showing engagement between the frame, nozzle assembly and clip. FIG. 60 is a top perspective view of a portion of the nasal assembly shown in FIG. 59. It is the elements on larger scale of the cushion shown in FIG. FIG. 6 is a schematic diagram illustrating force distribution according to an aspect of the present invention. FIG. 7 is a rear perspective view of a portion of an alternative embodiment of a nasal assembly showing engagement between a frame, a nozzle assembly and a clip. FIG. 10 is a rear perspective view showing engagement between another embodiment of the frame, nozzle assembly and clip. FIG. 67 is a perspective view of the nozzle assembly shown in FIG. 66 engaged with the frame shown in FIG. 66. FIG. 68 is a perspective view of the nozzle assembly shown in FIG. 67 engaged with the frame shown in FIG. 67. FIG. 67 is a perspective view of the clip shown in FIG. 66 engaged with the frame and nozzle assembly shown in FIG. 66. FIG. 68 is a perspective view of the clip shown in FIG. 67 engaged with the frame and nozzle assembly shown in FIG. 67. FIG. 60 is a perspective view of a second connector portion of the nasal assembly shown in FIG. 59. FIG. 60 is a cross-sectional view of a portion of the nasal assembly shown in FIG. 59 showing engagement between a frame, a second connector portion, and an angle connector. FIG. 60 is a perspective view of the angle connector of the nasal assembly shown in FIG. 59. FIG. 75 is a perspective view similar to FIG. 74 at a different angle. FIG. 75 is a side view of the angle connector shown in FIG. 74. FIG. 75 is a cross-sectional view of the angle connector shown in FIG. 74. It is a figure which shows another embodiment of this invention. FIG. 76B is an exploded view of FIG. 76A. FIG. 76B illustrates a second connector portion of the assembly of FIG. 76A. FIG. 76B illustrates an angle connector used in the assembly of FIG. 76A. FIG. 60 is a perspective view of the flow generator connector of the nasal assembly shown in FIG. 59. FIG. 78 is a cross-sectional view of the flow generator connector of the nasal assembly shown in FIG. 77. FIG. 60 is a cross-sectional view of the embodiment of the intake conduit of the nasal assembly shown in FIG. 59. FIG. 60 is a perspective view of the headgear yoke of the headgear assembly of the nasal assembly shown in FIG. 59. FIG. 75 is a perspective view showing engagement between a headgear yoke (FIG. 80) and an angle connector (FIG. 74). FIG. 82 is a cross-sectional view through the line 82-82 of FIG. 81. FIG. 60 is a perspective view of the headgear buckle of the nasal assembly shown in FIG. 59. FIG. 60 is a perspective view of the nasal assembly shown in FIG. 59 showing headgear assembly routing. FIG. 60 is another perspective view of the nasal assembly shown in FIG. 59 showing headgear assembly routing. 1 is a top view of a nasal assembly manufactured in accordance with an embodiment of the present invention. FIG. FIG. 89 is a side view of the nasal assembly shown in FIG. 86. FIG. 89 is a bottom view of the nasal assembly shown in FIG. 86. FIG. 87 is an exploded view of a portion of the nasal assembly shown in FIG. 86. FIG. 6 is a perspective view of a portion of an embodiment of a nasal assembly. FIG. 6 is a top view of a headgear connector according to an alternative embodiment of the present invention. FIG. 93 is a perspective view of the upper portion of the central conduit of the nasal assembly shown in FIG. 90. FIG. 93 is a top view of the upper portion of the central conduit of the nasal assembly shown in FIG. 92. FIG. 93 is a perspective view of the lower portion of the central conduit of the nasal assembly shown in FIG. 90. FIG. 95 is a bottom view of the lower portion of the central conduit of the nasal assembly shown in FIG. 94. FIG. 87 is a perspective view of the intake conduit of the nasal assembly shown in FIG. 86. FIG. 87 is a schematic view of a Y-shaped intake connector of the nasal assembly shown in FIG. 86. FIG. 87 is a perspective view of the intake conduit of the nasal assembly shown in FIG. 86. FIG. 87 is a schematic illustration of the nasal assembly shown in FIG. 86 with the nozzle in a first position adjacent to the patient's nasal cavity. FIG. 87 is a schematic illustration of the nasal assembly shown in FIG. 86 in a second position in which the nozzle is in sealing engagement with the patient's nasal cavity. FIG. 6 is a perspective view of another embodiment of a nasal assembly. FIG. 99 is an enlarged perspective view of the nozzle and gusset portion of the nasal assembly shown in FIG. 98. FIG. 99 is an enlarged perspective view of the intake conduit of the nasal assembly shown in FIG. 98. FIG. 99 is a front perspective view of the nasal assembly shown in FIG. 98 attached to a patient's head. FIG. 99 is a rear perspective view of the nasal assembly shown in FIG. 98 attached to a patient's head. FIG. 99 is a front perspective view of the nasal assembly shown in FIG. 98 engaged with a patient's nasal cavity. FIG. 99 is a side perspective view of the nasal assembly shown in FIG. 98 engaged with a patient's nasal cavity. FIG. 99 is a side view of the nasal assembly shown in FIG. 98 engaged with a patient's nasal cavity. FIG. 99 is a front perspective view of the nasal assembly shown in FIG. 98 engaged with a patient's nasal cavity. FIG. 6 is a perspective view of another embodiment of a nasal assembly attached to a patient's head. FIG. 6 is a perspective view of yet another embodiment of the present invention. FIG. 6 is a perspective view of yet another embodiment of the present invention. FIG. 6 illustrates yet another alternative embodiment of the present invention. FIG. 6 illustrates yet another alternative embodiment of the present invention. FIG. 6 illustrates yet another alternative embodiment of the present invention. FIG. 6 is a diagram showing still another embodiment according to the present invention. FIG. 6 is a diagram showing still another embodiment according to the present invention. FIG. 6 illustrates another alternative embodiment of the present invention. FIG. 6 illustrates another alternative embodiment of the present invention. FIG. 6 illustrates another alternative embodiment of the present invention. It is a figure which shows another embodiment of this invention. FIG. 6 illustrates yet another alternative embodiment of the present invention. It is a figure which shows another embodiment of this invention. It is a figure which shows another embodiment of this invention. FIG. 6 is a cross-sectional view of an alternative nozzle according to the present invention. FIG. 6 is a cross-sectional view of an alternative nozzle according to the present invention. FIG. 6 is a cross-sectional view of an alternative nozzle according to the present invention. FIG. 6 is a cross-sectional view of an alternative nozzle according to the present invention. FIG. 6 is a cross-sectional view of an alternative nozzle according to the present invention. FIG. 107B is a perspective view of two nozzles similar to the nozzle shown in FIG. 107Q. FIG. 6 is a perspective view of yet another embodiment of a nasal assembly. It is a figure which shows the tube retainer by embodiment of this invention. It is a figure which shows the tube retainer by embodiment of this invention. FIG. 6 shows another tube retainer according to an embodiment of the present invention. FIG. 109 is an isometric view of a portion of the nasal assembly shown in FIG. 1 is a cross-sectional view of a portion of a nasal assembly according to the present invention. FIG. 3 is a cross-sectional view of a ventilation opening according to the present invention. FIG. 3 is a cross-sectional view of a ventilation opening according to the present invention. FIG. 111 is a partially enlarged cross-sectional view on the left hand side of FIG. 110. It is a partial expanded sectional view of the right hand side of FIG. FIG. 3 is an exploded perspective view showing an interface between a seal ring and an elbow swivel according to an embodiment of the present invention. FIG. 109 is a partial cross-sectional view of a portion of the mask assembly shown in FIG. 108. FIG. 6 shows yet another embodiment of the present invention comprising an integral plug seal assembly. It is a figure which shows another embodiment of this invention. It is a figure which shows another embodiment of this invention. It is a figure which shows another embodiment of this invention. It is a figure which shows another embodiment of this invention. It is a figure which shows another embodiment of this invention. It is a figure which shows another embodiment of this invention. It is a figure which shows another embodiment of this invention. It is a figure which shows another embodiment of this invention. It is a figure which shows another embodiment of this invention. It is a figure which shows another embodiment of this invention. It is a figure which shows another embodiment of this invention. It is a figure which shows another embodiment of this invention. It is a figure which shows another embodiment of this invention. It is a figure which shows another embodiment of this invention. It is a figure which shows another embodiment of this invention. It is a figure which shows another embodiment of this invention. It is a figure which shows another embodiment of this invention. FIG. 6 shows yet another swivel elbow according to an embodiment of the present invention. FIG. 6 shows yet another swivel elbow according to an embodiment of the present invention. FIG. 6 shows yet another swivel elbow according to an embodiment of the present invention. FIG. 6 shows another alternative embodiment of the present invention. FIG. 6 shows another alternative embodiment of the present invention.

  The following includes a description of several main illustrated embodiments of the present invention. Each of the illustrated main embodiments includes features used with and / or in other embodiments, as will be appreciated by those skilled in the art.

[First embodiment]
FIG. 1 shows an embodiment of a nasal assembly 10 configured to deliver breathable gas to the nasal cavity 12 of a patient's nose 14. The nasal assembly 10 includes a frame 16 and a nozzle assembly 18 that is permanently or removably connected to the frame 16. Headgear assembly 20 (see FIG. 18) is preferably removably connected with connection assembly 22 to maintain frame 16 and nozzle assembly 18 in a desired adjusted position on the patient's face. An intake conduit (see, eg, FIG. 49) is also removably connected to the frame 16 by the connection assembly 22 for transferring breathable gas into the frame 16 and nozzle assembly 18 for breathing by the patient. The headgear assembly 20 and the intake conduit are removably connected to the frame 16 by an intake conduit and headgear connection assembly 22. The connection assembly 22 includes a first connector portion 24 (see FIGS. 2 and 3) provided by the frame 16 and a second connector portion 26 configured to be removably coupled to the first connector portion 24. Prepare. The second connector portion 26 is removably connected to the headgear assembly 20 and the intake conduit, as will be further discussed.

  As shown in FIGS. 2 to 4, the frame 16 includes a main body 28 in which a central opening 30 for accommodating the nozzle assembly 18 is formed. The frame 16 also includes a side frame member 32 provided on each lateral side surface of the main body 28. The side frame member 32 is preferably formed integrally with the main body 28 of the frame 16. In the illustrated embodiment, the frame 16 is a rigid or semi-rigid structure formed from a polymeric material. However, the frame 16 may be semi-rigid to allow flexibility of the frame 16 to the patient's face during use. The frame 16 may also be semi-rigid in certain areas for customized bending in certain areas of the frame 16.

  Each side frame member 32 includes a first connector portion 24 formed integrally therewith. As best shown in FIGS. 2 and 3, the first connector portion 24 includes a connection section 34 and a marking section 36. The connecting section 34 is configured to interlock with the second connector portion 26 to prevent the second connector portion 26 from axially separating from the first connector portion 24. The marking section 36 continues to be “locked” in the adjusted position during use, while allowing selective circumferential adjustment of the second connector portion 26 relative to the first connector portion 24 about the axis during fitting. In order to do so, the second connector portion 26 is configured to pawl.

  In particular, the connection section 34 of each side frame member 32 includes a series of grooves or separations that separate the connection section 34 into a plurality of resiliently flexible arms 38 that are configured to bend radially inward and outward. A slot 37 is provided. Each arm 38 includes a rib portion 40 at its free end. In use, the rib portions 40 of the plurality of arms 38 engage the corresponding portions 24, 26 of the second connector portion 26 to couple the first and second connector portions 24, 26 together. Composed. For example, the first and second connector portions 24, 26 may be configured such that when a force is applied to the second connector portion 26 that moves axially away from the first connector portion 24, the first connector portion 26, They are locked together to prevent inadvertent separation from the connector portion 24. Furthermore, the first and second connector portions 24, 26 engage each other to provide a good seal.

  The marking section 36 of each side frame member 32 includes a plurality of teeth 42. The teeth 42 are configured to selectively engage teeth 44 provided on the second connector portion 26 (see FIGS. 9 and 10). As a result, the second connector portion 26 can rotate to a desired position with respect to the frame 16. In use, the teeth 44 on the second connector portion 26 engage between the optional teeth 42 provided on the marking section 36 at the desired location, causing the second connector portion 26 to engage the first connector portion. 24 and, therefore, lock against the frame 16. For adjustment, the user can manually change the positions of the teeth 66 and teeth 42.

  According to one aspect, the teeth 42 of the marking section 36 are torque removed when a predetermined torque is applied to the second connector portion 26 and the teeth 42 re-engage with the teeth 44 of the second connector portion 26. Until then, the teeth 42 are configured to automatically press outwardly on the teeth 44 of the second connector portion 26 to allow rotation of the second connector portion 26. Accordingly, the second connector portion 26 can be rotationally adjusted or marked relative to the frame 16 within a predetermined angle. The angle of possible rotation adjustment can be changed as needed by changing the number and position of the teeth 42 on the marking section 36. The adjustment angle range allows the patient to adjust the position of the nozzle assembly 18 relative to the patient's nose. For optimal alignment, in certain preferred embodiments, the nozzle assembly 18 is formed from an integrally molded silicone piece attached to the frame 16.

  In the illustrated embodiment, the adjustment or marking action is directed perpendicular to the connection action to minimize possible separation of the second connector portion 26 from the first connector portion 24.

  As best shown in FIG. 4, the main body 28 includes opposing side walls 46 that define a central opening 30 for receiving the nozzle assembly 18. Sidewall 46 is configured to engage a corresponding portion of nozzle assembly 18 to couple nozzle assembly 18 and frame 16 to each other, as will be further discussed.

  As shown in FIGS. 5-8, the nozzle assembly 18 includes a bottom portion 48 and a pair of nozzles 50 attached thereto. The bottom portion 48 has a side wall 52 configured to sealingly engage the side wall 46 and the central wall 54 of the frame 16. Each of the pair of nozzles 50 has a first portion 56 and a second portion 58. The first portion 56 is attached to the central wall 54 of the bottom portion 48 that communicates with each discharge opening provided in the central wall 54. The second portion 58 is configured to sealingly engage the nasal cavity 12 of the patient's nose 14 during use and provide a seal between the nasal assembly 10 and the patient's nasal cavity 12. When the nozzle assembly 18 is attached to the frame 16, the nozzle assembly 18 and the frame 16 together form a conduit for directing breathable gas through the pair of nozzles 50 to the patient's nose.

  In the illustrated embodiment, the nozzle assembly 18 is removably attached to the frame 16 by a snap that allows for simple assembly, such as a snap fit, a push pin fit, or an extension fit. For example, the side walls 52 of the bottom portion 48 may include ribs or grooves / recesses configured to lock together with recesses / ribs provided on each side wall 46 of the frame 16 with a snap fit. However, the nozzle assembly 18 is removably attached to the frame 16 in any other suitable manner, such as a friction or interference fit and / or tongue and groove configuration, as is known in the art. Also good. Alternatively, the nozzle assembly 18 may be firmly coupled to the frame 16 by, for example, an adhesive or a fixture. The nozzle assembly 18 may be formed integrally with the frame 16 or may be overmolded. That is, the nozzle assembly and frame may be a unitary structure with different thicknesses and hardnesses to add rigidity.

  Preferably, the nozzle assembly 18 is flexible so as to increase comfort and accommodate for a variety of patient face shapes, thereby allowing relative movement between the nozzle assembly 18 and the frame 16. Is. The bottom portion 48 is also configured to be able to expand and contract to change the distance between the frame 16 and the pair of nozzles 50, as will be discussed further below. That is, the central wall 54 has a substantially flat shape upon introduction of pressurized gas to cause the nozzle 50 to move toward the patient's nose during use, thereby forming a substantially curved shape. It is preferably made of an elastic and / or flexible material that is configured to deform, eg, expand. Other portions of the bottom portion 48, such as the side wall 52, may be configured to deform / expand as well.

  In the illustrated embodiment, the bottom portion 48 has a substantially dogbone shape. However, the bottom portion 48 avoids contact with sensitive parts of the patient's face to prevent contact with the patient's septum or otherwise minimize contact pressure at these sensitive parts. It may have any suitable shape, including a shape to do so, such as a notched bottom shape.

  As best shown in FIGS. 1, 5 and 6, the second portion 58 of the nasal assembly includes a portion that seals the nostril (eg, the region around the edge of the nostril opening) underneath and a patient in use. And another part that enters the nasal cavity of the nose (for example, tapered, conical, hollow frustoconical, etc.). However, the nozzle 50 may be in the form of a nasal prong, cannula, or nasal puff, for example, and may sealingly engage the nasal cavity 12 in any suitable manner. For example, the nozzle 50 may seal within the nasal cavity 12, seal against the nasal cavity 12, seal around the nasal cavity 12, or a combination thereof. The nozzle 50 may be contoured to match the anatomical shape inside the patient's nose. In addition, various sizes and / or shapes, such as small, medium and large nozzles, may be formed to accommodate the range of the patient's nose.

  In the illustrated embodiment, the first portion 56 of the nozzle 50 is movable with respect to the bottom portion 48 and thus the frame 16 to increase comfort and accommodate for a variety of patient face shapes. The second portion 58 has a small cross-sectional area.

  In one embodiment, nasal assembly 10 uses a patient-specific nozzle that is removably attached to bottom portion 48 or frame 16. In a preferred form, the nozzle is made from a substantially flexible polymeric material such as a silicone elastomer. A unique nozzle can be adapted to each patient's nose by first scanning each patient's nose on-site or remotely and then using the data for interface, e.g. mold manufacturer manufacture . Scanning can be performed using non-contact or contact methods. Non-contact methods are, for example, by photography, by physical contact with the probe, or by collecting impressions inside the nostrils of the desired contact interface. After a pair of suitable nozzles have been created, they are sent to the customer to fit the patient. The advantage of a pre-formed or customized shape is that the cross-sectional area can be maximized to reduce flow resistance. Also, the use of a preformed shape improves comfort. Stiff materials such as semi-rigid plastics that have greater resistance to torsion and thus minimize torsion of the patient's nostril nozzles may be used. Also, its connection to the bottom portion 48, for example, the bottom portion 48 is soft and flexible, allowing a thin wall cross section and using a rigid plastic that allows the nozzle flexibility. Also good.

  In the illustrated embodiment, the nozzle 50 is integrally formed with the bottom portion 48 from a deformable and inflatable material. The nozzle 50 and bottom portion 48 may be manufactured from a soft and flexible skin compatible material such as silicone. The nozzle 50 and bottom portion 48 may be, for example, injection, compression and / or transfer molded as is known in the art.

  However, nozzle 50 and bottom portion 48 may be formed of any suitable material and may be formed of any suitable process. For example, the bottom portion 48 and the nozzle 50 may be formed separately and permanently attached to each other, for example with an adhesive and / or mechanical fixture. Alternatively, the bottom portion 48 and the nozzle 50 may be formed separately and removably attached to each other.

  As described above, the second connector portion 26 is provided to detachably connect the headgear assembly 20 and the intake conduit to the frame 16. As shown in FIGS. 9 and 10, each second connector portion 26 is a uniform polymer piece (eg, silicone) formed by, for example, injection molding, compression molding or blow molding. Each second connector portion 26 includes a main body having a front portion 60 and a rear portion 62. The front portion 60 is interlocked with the first connector portion 24 provided on the frame 16, and the rear portion 62 is detachably connected to the headgear assembly 20 and the intake conduit. The front and rear portions 60, 62 are angled relative to each other such that the second connector portion 26 follows the contours of the patient's face during use, as shown in FIG.

  In particular, the front portion 60 comprises a substantially cylindrical conduit 64 having a recess 66 on its internal surface. The recess 66 is configured to receive the rib portion 40 of the plurality of arms 38 on the first connector portion 24. That is, the plurality of arms 38 are pressed toward each other when the first connector portion 24 is inserted into the conduit 64 of the second connector portion 26. Once the rib portion 40 of the arm 38 reaches the recess 66, the arm 38 springs outward into the recess 66 to provide a mutual locking engagement between the first and second connector portions 24,26. can do. In order to separate the second connector portion 26 from the frame 16, the patient may force the second connector portion 26 axially outward from the frame 16 with sufficient force to release the rib portion 40 from the recess 66. Just pull.

  The front portion 60 also includes a crossbar 68 that includes the teeth 44 of the second connector portion 26. As discussed above, the teeth 44 are provided by the first connector portion 24 to allow selective rotational adjustment of the first connector portion 24 and thus the second connector portion 26 relative to the frame 16. Engages with a plurality of teeth 42. The cross bar 68 acts as a leaf spring that elastically biases the teeth 44 and engages the teeth 42 of the first connector portion 24.

  As shown in FIGS. 9 and 10, the rear portion 62 of the second connector portion 26 includes a crossbar 70 that defines an opening through which the strap of the headgear assembly 20 passes and is detachably connected. However, the crossbar 70 may be configured to form two or more openings for connection with the headgear assembly 20. For example, as shown in FIGS. 11 and 12, the second connector portion 26 includes a crossbar 71 provided with a pair of openings through which a pair of straps of the headgear assembly 20 are detachably connected. Prepare.

  The rear portion 62 also includes an elongate conduit 72 configured to be connected to an intake conduit that transfers breathable gas to the frame 16 and nozzle assembly 18. In the illustrated embodiment, the conduit 72 of the rear portion 62 has a different cross-sectional shape than the conduit 64 of the front portion 60 to facilitate connection with the intake conduit. However, the conduits 72, 64 of the rear and front portions 62, 60 may each have a similar cross-sectional area.

FIGS. 13 and 14 schematically illustrate the routing of one of the first pair of intake conduits 74 and the second pair of intake conduits 76 of the nasal assembly 10. The first end of the first pair of conduits 74 is connected to each conduit 72 of the second connector portion 26. A second end of the first pair of conduits 74 is connected to each first end of the second pair of intake conduits 76. The second end of the second pair of intake conduits is connected to a pressurized supply that supplies pressurized breathable gas. As a result, pressurized gas may pass through the first and second pairs of intake conduits 74, 76 into the frame 16 and bottom portion 48 and through the nozzle 50 for breathing by the patient. it can. As shown in FIG. 1, the frame 16 includes an exhaust port 78 that includes a series of openings for the outflow of CO ₂ that slightly protrude outward from the frame 16.

  As shown schematically in FIG. 13, the first and second pairs of intake conduits 74, 76 are routed to extend upwardly over the patient's head. For example, in FIG. 13, the first pair of intake conduits 74 has a length of about 120-160 mm, preferably about 140 mm, and the second pair of intake conduits 76 is about 160-200 mm, preferably Has a length of about 180 mm. However, other length dimensions may be used as well. In the illustrated embodiment, the first pair of intake conduits 74 is inclined about 30 ° from the horizontal direction, and the second pair of intake conduits 76 is inclined about 90 ° from the horizontal direction. That is, it is inclined about 60 ° from the first pair of conduits 74. However, the first and second pairs of intake conduits 74, 76 may have any suitable length, and any suitable manner that extends upwardly over the patient's head. The route may be set with.

  Alternatively, as schematically illustrated in FIG. 14, the first and second pairs of intake conduits 74, 76 may be routed to extend downwardly under the patient's chin. . For example, in FIG. 14, the first pair of intake conduits 74 has a length of about 40-80 mm, preferably about 60 mm, and the second pair of intake conduits 76 is about 180-220 mm, preferably Has a length of about 200 mm. In the illustrated embodiment, the first pair of intake conduits is inclined about −20 ° to 40 °, preferably about 30 ° from the horizontal direction, and the second pair of intake conduits 76 is horizontal. It is inclined about −90 ° from the direction, ie it is inclined about −120 ° from the first pair of conduits 74. However, the first and second pairs of intake conduits 74, 76 may have any suitable length and may be any suitable so as to extend upwardly over the patient's head. The route may be set by various methods.

  15 and 16 illustrate an embodiment of a connector configured to interconnect the second end of the first pair of conduits 74 to the first end of the second pair of intake conduits 76. Indicates. The connector 80 shown in FIG. 15 is appropriately tilted to route the conduits 74, 76 upwardly over the patient's head. The connector 82 shown in FIG. 16 is appropriately tilted to route the conduits 74, 76 downwardly under the patient's chin.

  FIG. 17 shows a flow generator connector 84 configured to interconnect the second end of the second pair of intake conduits 76 with a pressurized source. In particular, the flow generator connector 84 is connected to a first conduit 86 configured to connect to one of the second pair of intake conduits 76 and to the other of the second pair of intake conduits 76. And a configured second conduit 88. The flow generator connector 84 includes a third conduit 90 configured to connect with a conduit connected to a pressurized supply. The third conduit 90 may comprise a swivel mechanism or flexible joint to allow relative movement between the flow generator connector 84 and the conduit associated with the pressurized source.

  In the illustrated embodiment, the intake conduits 74, 76 form a single air flow passage. However, conduits 74, 76, connector portions 24, 26, and connectors 80, 82, 84 are configured to provide more than one air flow passage.

  Intake conduits 74, 76 may be manufactured in any suitable manner. For example, the conduits 74, 76 may be extruded or the conduits may be injection molded. Intake conduits 74, 76 may also be composed of any suitable polymeric material, such as silicone or a thermoplastic elastomer such as, for example, Krayton®.

  Also, the intake conduits 74, 76 are puncture-resistant, counter-collapseable or anti-twisted, such as those disclosed in US Pat. No. 6,044,844, which is incorporated herein by reference in its entirety. May be formed of a sex tube.

  Intake conduits 74, 76 and each connector portion 24, 26 and / or connectors 80, 82, 84 may be friction type mating, mechanical fasteners, adhesives, co-molded, insert molded, or any other It may be held by suitable means.

  In use, compressed gas enters through connector 90 of flow generator connector 84, through intake conduits 76, into first set of intake conduits 74, and on both side frame members 32 of frame 16. Proceed within. Air passes through the frame 16, into the bottom portion 48 and the nozzle 50, and into the patient's nasal cavity 12. Exhaled air from the patient's nose can exit through an exhaust port 78 formed in the frame 16.

  A headgear assembly 20 is removably attached to a second connector portion 26 attached to the frame 16 to maintain the frame 16 and nozzle assembly 18 in a desired adjusted position on the patient's face. As shown in FIG. 18, the headgear assembly 20 includes two side portions 92 that include a rear portion 94 that connects the side portions 92. Each side portion 92 includes a side strap 96. A rear portion 94 that interconnects the two side portions 92 includes an upper strap 98 that passes over the top of the patient's head and a rear strap 100 that passes around the rear portion of the patient's head. However, the headgear assembly may be permanently attached to the frame.

  Each side strap 96 is detachably connected to the second connector portion 26. In particular, the end portion of each side strap 96 has a reduced width that allows the strap 96 to be wrapped around a crossbar 70 provided on the second connector portion 26. Fixing the side straps 96 to each crossbar 70 is aided by the use of a hook loop material such as Vector®. In this way, the side strap 96 can be adjusted relative to the second connector portion 26 for proper fit.

  The upper strap 98 and the rear strap 100 are detachably connected to the side strap 96 by a buckle 102 provided on the side strap 96. The buckle 102 can be attached to the side strap 96 by gluing, sewing and / or other known methods. In the illustrated embodiment, the buckle 102 comprises a single crossbar to allow the upper and rear straps 98, 100 to be coupled thereto. However, any other suitable buckle device may be provided to interconnect the side strap 96 with the upper and rear straps 98,100.

  The straps 96, 98, 100 of the headgear assembly 20 may be manufactured from a soft, flexible composite material. For example, the straps 96, 98, 100 may comprise two material layers, one of which is a woven material and the other of which is a polymer material. The headgear assembly 20 may also include one or more stiffeners attached thereto to add rigidity to the headgear assembly 20 in a plane and direction. This helps to stabilize the nasal assembly 10 on the patient's head during use.

  The headgear assembly 20 may also include any number of straps for supporting the nasal assembly 10 on the patient's head. For example, each of the side straps 96 may comprise a pair of straps used with the second connector portion 26 'shown in FIGS. Alternatively, the headgear assembly 20 may be manufactured as a unitary structure.

  As shown in FIG. 1, the bottom portion 48 extends outwardly from the frame 16 to provide additional surface area or footprint. As air under pressure enters the frame 16, the bottom portion 48 expands causing the nozzle 50 to sealingly engage the patient's nasal cavity 12. For example, expansion of the bottom portion in the direction of the nostril causes the nozzle to sealingly engage the nasal cavity 12.

  Also, a portion of the sealing force may be provided by the first portion 56. This is in contact with the patient's nostril and is subjected to an initial load like a spring.

  That is, the bottom portion 48 is configured to expand and contract to change the distance between the frame 16 and the nozzle 50. The bottom portion 48 moves the nozzle 50 between a first position where the nozzle 50 is adjacent to the patient's nostril 12 and a second position where the nozzle 50 sealingly engages the patient's nasal cavity 12. In particular, in the unexpanded state, the nozzle 50 is spaced from the patient's nasal cavity 12 or slightly in contact with the nasal cavity. When the nasal assembly 10 is pressurized with gas, the bottom portion 48 expands, sealingly engaging the nozzle 50 with the patient's nasal cavity 12 to provide a seal between the nasal assembly 10 and the patient's nasal cavity 12. As the gas pressure increases, the force applied to the underside of the nasal cavity increases through the bottom portion 48.

  The bottom portion 48 gives the frame 16 additional surface area or footprint, which in turn provides additional force on the nozzle 50 that increases the sealing efficiency of the nozzle 50. That is, the bottom portion 48 is constructed and arranged to bring the nozzle 50 into contact with the patient's nose. The force or pressure on the patient's nose can be: (a) pressure in the frame 16 and nozzle assembly 18, (b) additional surface area of the bottom portion 48, and / or (c) nozzle 50 or central wall 54 and bottom portion. It is proportional to the initial load due to the material and geometry of the bottom portion 48 including the 48 first portions 56. In this way, the surface area of the bottom portion 48 may be changed to change the force or pressure applied to the patient's nose.

  The side wall 52 of the bottom portion 48 may act as a spring structure to impart a force component to the patient's face through the nozzle 50. The force may be adjusted by adjusting the thickness of the side wall 52. Further, the thickness of the sidewall 52 may vary with the additional surface area provided by the bottom portion 48. In this way, the force provided by the bottom portion 48 along with the air pressure provides an effective sealing force on the patient's nasal cavity 12.

  The bottom portion 48 reduces the headgear assembly tension required to achieve a proper seal. That is, the sealing force applied to the patient's nose may be provided by the bottom portion 48, the initial load and / or air pressure, rather than by tension by the headgear assembly 20. This improves patient comfort as well as sealing characteristics.

  Therefore, when adjusting the headgear assembly 20, it is desirable to bring the nozzle 50 only near the patient's nose or make it very lightly in contact. In this way, the bottom portion 48 is not substantially compressed. During use, the contact needs to be sufficient to seal.

  The bottom portion 48 also provides a detachable joint between the frame 16 and the nozzle 50, thus allowing some relative movement between the nasal assembly 10 and the user's face. As a result, the nozzle 50 can accommodate small changes in the shape of the patient's nose without undue force, and while maintaining an effective seal, small movement of the nasal assembly 10 relative to the patient's nose during use. Can deal with.

  In addition, a connection assembly 22 comprising first and second connector portions 24, 26 allows the position of the nozzle 50 to be easily adjusted relative to the patient's nose. In particular, the patient can rotate the frame 16 relative to the headgear assembly 20 to adjust the position of the nozzle 50.

  Also, the bottom portion 48 need not be a single bottom configuration as discussed above, but may have an alternative shape. For example, the bottom portion 48 may be in the form of two or more bottom portions provided in succession.

  As shown in FIGS. 5 and 6, the end portions of the bottom portion 48 are inclined with respect to each other such that the nozzles 50 attached thereto are inclined with respect to each other. This angle, also called the nose wing angle, can be adjusted to accommodate various shapes of the patient's nose. For example, the nasal assembly 10 shown in FIGS. 5 and 6 has a nose wing angle in the range of 135 to 155 °, preferably about 145 °, to accommodate a substantially flat nose (see FIG. 19). Alternatively, the nose wing angle may be in the range of 70-90 °, preferably about 80 °, to accommodate a pointed or sharp nose (see FIG. 20). However, the nose wing angle may have any suitable dimensions to accommodate any shape of nose. The movement of the nozzle helps to accommodate a sharper nose.

  As shown in FIG. 21, the sealing zone of the nozzle 50 extends at an angle from about half the height of the nozzle 50. In the illustrated embodiment, the nozzle 50 has a height of about 9 mm. However, the nozzle 50 may have any suitable height and may comprise any suitable sealing zone.

  The nozzles 50 are suitably spaced relative to each other on the bottom portion 48. The spacing is based on the size of the nozzle 50 and the available space on the bottom portion 48.

  The dimensions of the nozzle 50 are based on the outer circumference of the patient's nostril. In one embodiment, the ellipticity ratio is used to determine the nozzle geometry (see FIG. 22). For example, an ellipticity ratio of 0.7 (standard deviation average + 1) may be used to determine the nozzle geometry. As shown in FIG. 23, the bottom major axis of the nozzle is determined by measuring from the center of the nostril to the top edge. As shown in FIG. 24, the bottom short axis of the nozzle is determined by the maximum spacing available between the nozzles. However, any other suitable method may be used to determine the nozzle dimensions.

  The nose wing angle, sealing zone, spacing between nozzles, and nozzle dimensions discussed above can be determined to accommodate a wide range of patients. Also, nasal assemblies of various sizes, for example small, medium and large, may be provided to accommodate patients of various sizes. However, any other suitable measurement and method may be used to provide a nasal assembly that fits the widest range of patients.

  One aspect of the invention relates to a nasal assembly that provides separation of sealing and stability forces. That is, the nasal assembly is separated from the sealing force that acts to maintain the seal between the nasal assembly and the patient's face that acts to maintain the nasal assembly on the patient's face. Or at least better differentiated. In use, the sealing force acts on more sensitive areas of the patient's face, such as the nose, and the stabilizing force acts on less sensitive areas of the patient's face, such as the upper lip, cheeks and the back of the patient's head. Furthermore, the stability tends to be higher than the sealing force. Thus, the nasal assembly is configured such that a high stability force is substantially separated from a low sealing force to improve patient comfort.

  In particular, to maintain the nasal assembly on the patient's face during use, the stability applied by the headgear assembly is distributed to the back of the patient's head, the patient's cheek and the patient's upper lip. Composed. The nasal assembly includes a nozzle assembly configured to apply a sealing force to the nasal cavity of the patient's nose during use. The shape of the headgear assembly is configured to achieve a substantially independent adjustment of sealing force and stability force. Thus, higher stability does not significantly affect more sensitive areas of the patient's face, such as the nose.

  Another aspect of the invention relates to cooperation between the nozzle and the bottom portion for applying force to the patient's face. In particular, the bottom portion is configured to apply a powerful component to the patient's face and the nozzle is configured to apply a powerful component to the patient's face.

  As shown in FIG. 1, for example, the bottom portion is a substantially rigid structure that applies a relatively small force component to the patient's face. That is, the bottom portion is substantially not expandable or expandable when compressed by a gas. Conversely, the nozzle may have a flexible structure that is soft to impart a relatively large force component to the patient's face. That is, the first portion 56 of the nozzle 50 acts as a spring structure, i.e., spring loaded or elastic, to provide a force component through the nozzle 50 to the patient's face. By being spring loaded, the nozzle applies a predetermined force to the user's nasal sealing area for sealing purposes. Preferably, the nozzle applies an initial load before the pressurized gas is introduced to provide a sealing force for the user. As a result, both the bottom portion and the nozzle provide a force to provide a seal between the nasal assembly and the patient's nasal cavity.

  Alternatively, the bottom portion is a flexible flexible structure that, when inflated, applies a relatively large force component to the patient's face. Conversely, the nozzle is a more rigid structure that applies a relatively small force component to the patient's face. As a result, both the bottom portion and the nozzle provide a force to provide a seal between the nasal assembly and the patient's nasal cavity.

  Thus, the nozzle assembly is configured such that the nozzle is spring loaded or resilient in order to apply a component of sufficient force for sealing. Thus, the bottom portion can have a more rigid structure to apply a smaller sealing force component. Alternatively, the nozzle assembly can be configured such that the bottom portion is sufficiently extensible to apply a component of sufficient sealing force, and the nozzle can be configured with a smaller sealing force. A more rigid structure can be obtained for adding the components. Alternatively, the nozzle may be substantially rigid, for example where the nozzle is adjusted for a particular user. This alternative can be combined with previous embodiments (for rigid bottom portions and spring-loaded (eg, preloaded) nozzles) embodiments. In this case, the bottom of the nozzle may be configured to provide various amounts of initial load, preferably the adjusted nozzle sealing portion for the user may be relatively more rigid. . The nozzle assembly may also be configured such that the bottom portion and the nozzle provide a substantially similar sealing force component.

[Second exemplary embodiment]
FIGS. 25-37 show another embodiment of a nasal assembly shown as 210. As best shown in FIGS. 25-37, the nasal assembly 210 includes a frame 216 and a nozzle assembly 218 removably connected to the frame 216. Headgear assembly 220 (see FIG. 37) is preferably removably attached to frame 216 to maintain frame 216 and nozzle assembly 218 in a desired adjusted position on the patient's face. An intake conduit 274 (see, eg, FIGS. 36 and 37) is also removably attached to the frame 216 for transporting breathable gas into the frame 216 and nozzle assembly 218 for breathing by the patient. Headgear assembly 220 and intake conduit 274 are removably connected to frame 216 by intake conduit and headgear connection assembly 222. The connection assembly 222 includes a first connector portion 224 (see FIGS. 28 and 29) provided by a frame 216 and a second connector portion 226 configured to removably couple with the first connector portion 224. . The second connector portion 226 is removably connected to the headgear assembly 220 and the intake conduit 274, as will be further discussed.

As shown in FIGS. 28 and 29, the frame 216 includes a main body 228 formed with a central opening 230 for receiving the nozzle assembly 218. The frame 216 also includes a side frame member 232 provided on each lateral side of the main body 228. Each side frame member 232 includes a first connector portion 224 formed integrally therewith. The first connector portion 224 is in the form of a conduit 264 having a recess 266 on its inner surface. Frame 216 is also a series of apertures 278 for the outflow of CO ₂ is formed.

  As shown in FIGS. 25-27 and 30-31, the nozzle assembly 218 includes a main body 219 and opposing end portions 221 (only half of the nozzle assembly 218 is shown). As best shown in FIG. 27, the end portion 221 extends over the side frame member 232 of the frame 216, and the main body 219 is in a covering relationship with the main body 228 and the central opening 230 of the frame 216. is there. When the nozzle assembly 218 is attached to the frame 216, the frame 216 adds rigidity to the relatively soft and flexible nozzle assembly 218.

The main body 219 of the nozzle assembly 218 includes a gusset portion 248 and a pair of nozzles 250 attached thereto. The nozzle 250 is configured in the same manner as the nozzle 50 described above. The main body 219 of the nozzle assembly is also a series of apertures 223 which are aligned with the series of openings 278 formed on the frame 216 for the outflow of CO ₂ is formed.

  As shown in FIGS. 32 to 34, the second connector portion 226 includes a main body having a front portion 260 and a rear portion 262. The front portion 260 includes a plurality of flexible arms 238 configured to bend radially inward and outward. Each arm 238 includes a rib portion 240 at its free end. In use, the rib portions 240 of the plurality of arms 238 are configured to engage within the recesses 266 of the first connector portion 224 to couple the first and second connector portions 224, 226 together. Contrary to the connection assembly 22 described above, the connection assembly 222 does not comprise a marking section. Accordingly, the second connector portion 226 can rotate relative to the first connector portion 224 by an infinite set amount to align the nozzle 250 with respect to the patient's nasal cavity. The setting may be locked using, for example, friction.

  The rear portion 262 of the second connector portion 226 includes a crossbar 270 that forms an opening through which the strap of the headgear assembly 220 passes and is removably connected. The rear portion 262 also includes a pair of conduits 272 configured to connect with intake conduits that transfer breathable gas to the frame 216 and nozzle assembly 218.

  As shown in FIG. 36, the nasal assembly 210 includes a pair of intake conduits 274 (only one of the intake conduits 274 is visible in FIG. 36). A first end of the conduit 274 is connected to each second connector portion 226 connected to the frame 216. The second end of the pair of conduits 274 is connected to a pressurized supply that supplies pressurized breathable gas. As shown in FIGS. 36 and 37, a pair of intake conduits 274 are routed to extend upward over the patient's head. However, the pair of intake conduits 274 may be routed in any suitable manner, for example, routed to extend downwardly under the patient's chin.

  As a result, pressurized gas can pass through first and second pairs of intake conduits 274 through frame 216 and nozzle assembly 218 and through nozzle 250 for breathing by the patient.

  FIG. 35 shows a flow generator connector 284 configured to interconnect the second end of the second pair of intake conduits 274 with a pressurized source. In particular, the flow generator connector 284 is configured to connect to a pair of first conduits 286 configured to connect to one of a pair of intake conduits 274 and the other of the pair of intake conduits 274. And a pair of second conduits 288. The flow generator connector 284 includes a third conduit 290 configured to connect with a conduit connected to a source of pressurized gas, air or fluid. The third connector 290 may comprise a swivel mechanism or flexible joint to allow relative movement between the flow generator connector 284 and the conduit associated with the pressurized source. The third connector 290 may also include a ball and socket joint so that the tube tension is minimized when the third connector 290 is in an overhead configuration and at the patient's top of the head.

  In the illustrated embodiment, the intake conduit 274 includes double airflow passages to prevent twisting and blockage. However, the conduit 274, connector portions 224, 226, and connector 284 may be configured to provide one air flow passage or more than one air flow passage.

  A headgear assembly 220 is removably attached to a second connector portion 226 attached to the frame 216 to maintain the frame 216 and nozzle assembly 218 in a desired adjusted position on the patient's face. As shown in FIG. 37, the headgear assembly 220 includes two side portions 292 with a rear portion 294 connecting the side portions 292 (only one of the side portions 292 is visually illustrated in FIG. 37). Is provided. Each side portion 292 includes a side strap 296. A rear portion 294 that interconnects the two side portions 292 includes an upper strap 298 that passes over the top of the patient's head and a rear strap 299 that passes around the back portion of the patient's head. The upper and rear straps 298, 299 may be adjusted to fit and may be a single strap or loop. The headgear assembly may also be permanently attached to the frame.

  Each side strap 296 has a reduced width that allows the side strap 296 to wrap around a crossbar 270 provided on the second connector portion 226. The securing of the side straps 296 to each crossbar 270 is aided by the use of a hook loop material such as Vector®. In this way, the side strap 296 can be adjusted relative to the second connector portion 226 for proper fit.

  An opening or buckle is provided on the side strap 296 to allow the upper and rear straps 298, 299 to be coupled thereto. However, the headgear assembly 220 may include any number of straps to support the nasal assembly 210 on the patient's head. Alternatively, the headgear assembly 220 may be manufactured as a unitary structure.

  As shown in FIG. 37, the headgear assembly 220 includes a retention strap 291 for holding the flow generator connector 284 and the intake conduit 274 in place on the patient's head. The headgear assembly 220 also includes a retention prong 293 for retaining the intake conduit 274 adjacent to the headgear assembly 220 when extending upward over the patient's head.

  Similar to the nasal assembly 10 described above, the force provided by the bottom portion 248 along with air pressure provides an effective sealing force on the patient's nasal cavity 12. Thus, the gusset portion 248 reduces the headgear assembly tension required to achieve a proper seal. The position of the nozzle 250 may also be adjusted relative to the user's nose to improve patient comfort.

  As shown in FIG. 25, for example, the gusset portion 248 has a flexible structure that is flexible to apply a relatively large force component to the patient's face when inflated. Conversely, the nozzle is a more rigid structure that applies a relatively small force component to the patient's face. That is, the first portion of the nozzle is lightly spring loaded to impart a relatively small force component to the patient's face through the nozzle. As a result, both the gusset portion and the nozzle provide a force to provide a seal between the nasal assembly and the patient's nasal cavity.

[Third exemplary embodiment]
38-51 illustrate another embodiment of the nasal assembly indicated by reference numeral 310. As best shown in FIGS. 38, 39 and 43, the nasal assembly 310 includes a frame 316 and a nozzle assembly 318 that is removably connected to the frame 316. Headgear assembly 320 is preferably removably attached to frame 316 to maintain frame 316 and nozzle assembly 318 in a desired adjustment position on the patient's face. An intake conduit 374 is also removably attached to the frame 316 for transporting breathable gas into the frame 316 and nozzle assembly 318 for breathing by the patient. Headgear assembly 320 and intake conduit 374 are removably connected to frame 316 by intake conduit and headgear connection assembly 322. The connection assembly 322 includes a first connector portion 324 (see FIGS. 40 and 43) provided by the frame 316, a second connector portion 326 configured to be removably coupled to the first connector portion 324, Is provided. The second connector portion 326 is removably connected to the headgear assembly 320 and the intake conduit 374 as will be further discussed.

  As shown in FIG. 40, the frame 316 includes a main body 328 formed with a central opening 330 for receiving the nozzle assembly 318. The frame 316 also includes a side frame member 332 provided on each lateral side of the main body 328. Each side frame member 332 includes a first connector portion 324 formed integrally therewith. The first connector portion 324 is in the form of a conduit 364 having a recess 366 (see FIG. 43) on its inner surface.

  As shown in FIG. 41, the nozzle assembly 318 includes a main body 319 and opposing end portions 321. As best shown in FIGS. 42, 43 and 44, the end portion 321 extends over the side frame member 332 of the frame 316, and the main body 319 is relative to the main body 328 and the central opening 330 of the frame 316. Are in a covering relationship. When the nozzle assembly 318 is attached to the frame 316, the frame 316 and the nozzle assembly 318 form a conduit for transporting breathable gas to the patient's nose. The frame 316 also adds rigidity or structural integrity to the relatively flexible nozzle assembly 318.

As shown in FIGS. 43 and 44, the main body 319 of the nozzle assembly 318 includes a bottom portion 348 and a pair of nozzles 350 attached thereto. The nozzle 350 is designed and configured in the same manner as the nozzle 50 described above. The main body 319 of the nozzle assembly 318 also includes one or more openings 323 (see, eg, FIGS. 39 and 41) for the outflow of CO ₂ .

  As shown in FIGS. 38B and 43, the second connector portion 326 includes a main body having a front portion 360 and a rear portion 362. The front portion 360 includes a rib portion 340. In use, the rib portion 340 is configured to engage within the recess 366 of the first connector portion 324 to couple the first and second connector portions 324, 326 together. Similar to the connection assembly 222 described above, the second connector portion 326 rotates relative to the first connector portion 324 by an infinite set amount to align the nozzle 350 with respect to the patient's nasal cavity. Can do. The setting may be optionally locked using, for example, friction.

  As shown in FIGS. 38 and 38B, the rear portion 362 of the second connector portion 326 includes an opening 370 through which the strap of the headgear assembly 320 passes and is removably connected. As shown in FIG. 38B, the rear portion 362 also includes a pair of conduits 372 configured to be connected to intake conduits that transfer breathable gas to the frame 316 and nozzle assembly 318.

  As shown in FIGS. 38, 39, and 45, the nasal assembly 310 includes a pair of intake conduits 374. A first end of the conduit 374 is connected to each second connector portion 326 connected to the frame 316. The second end of the pair of conduits 374 is connected to a pressurized supply that supplies pressurized breathable gas. As shown in FIG. 45, the second connector portion 326 routes the intake conduit 374 so that it extends upwardly over the patient's head, eg, downwardly under the patient's chin. Therefore, it may rotate relative to the first connector portion 324.

  As a result, pressurized gas can pass through first and second pairs of intake conduits 374 into frame 316 and nozzle assembly 318 and through nozzle 350 for breathing by the patient.

  45, 47 and 48 show an angle connector 384 configured to interconnect the second end of the second pair of intake conduits 374 with a pressurized source. As shown in FIG. 47, the connector 384 may include a pair of dual conduits 386 for connection with each intake conduit 374. Alternatively, as shown in FIG. 48, the flow generator connector 384 may include a pair of single conduits 386 for connection with each intake conduit 374. The end of the dual airflow passage intake conduit 374 may be modified as shown in FIG. 48 to facilitate connection with a connector 384 having a pair of single conduits 386. Also, the end of the intake conduit 374 interlocks with a series of ridges provided on the connector 384 to provide a reliable connection of the intake conduit 374 with the connector 384, as shown in FIGS. A series of ridges may be provided.

  As shown in FIG. 49, the intake conduit 374 includes a double air flow passage with, for example, a counter-collapsed central support wall to prevent twisting and blockage and facilitate connection. The intake conduit may also be made from a harder material, such as a harder durometer silicone, to prevent twisting and blockage. However, the conduit 374, connector portions 324, 326, and connector 384 may be configured to provide one air flow passage or more than one air flow passage. As shown in FIG. 47B, the intake conduit 374 may be extruded or otherwise manufactured in one piece. Alternatively, as shown in FIG. 48B, the intake conduit 374 may be formed by injection molding, co-molding, or insert molding, for example, in a suitable manner by other fasteners such as connectors and / or adhesives. Multiple conduits connected to each other may be provided, or the entire assembly may be integrally molded, thereby reducing components and complexity.

  A headgear assembly 320 is removably attached to a second connector portion 326 attached to the frame 316 to maintain the frame 316 and nozzle assembly 318 in a desired adjusted position on the patient's face. As shown in FIGS. 38, 39, and 45, the headgear assembly 320 includes two side portions 392 that include a rear portion 394 that connects the side portions 392. Each side portion 392 includes a side strap 396. A rear portion 394 that interconnects the two side portions 392 includes an upper strap 398 that passes over the top of the patient's head and a rear strap 399 that passes around the back portion of the patient's head. As shown in FIG. 45, the rear portion 394 may include a second rear strap 387 to add additional stability.

  Each side strap 396 has a reduced width that allows the side strap 396 to be wrapped around a crossbar 370 provided on the second connector portion 326. The securing of the side straps 396 to each crossbar 370 is aided by the use of a hook loop material such as Velcro®. In this way, the side strap 396 can be adjusted relative to the second connector portion 326 for proper fit.

  In the illustrated embodiment, the headgear assembly 320 is manufactured as a unitary structure. However, the headgear assembly 320 may include a plurality of straps suitably configured to support the nasal assembly 310 on the patient's head. As shown in FIG. 45, the headgear assembly 320 may include a retention strap 393 to hold the intake conduit 374 upward over the patient's head.

  FIG. 50 shows the nasal assembly 310 being engaged with the nasal cavity 12 of the patient's nose 14. FIG. 51 shows the nasal assembly 310 engaged with the nasal cavity 12 of the patient's nose. The patient's upper lip contacts the silicone outer surface of the nozzle assembly 318 to help hold the nasal assembly 310 in place on the patient's face.

  Similar to the nasal assembly 10 described above, the force provided by the bottom portion 348 along with air pressure provides an effective sealing force on the patient's nasal cavity 12. Thus, the bottom portion 348 reduces the headgear assembly tension required to achieve a proper seal. Also, the position of the nozzle 350 may be adjusted relative to the user's nose to improve patient comfort.

  As shown in FIG. 43, for example, the bottom portion 348 has a flexible structure to apply a relatively large force component to the patient's face when inflated. Conversely, the nozzle is a more rigid structure that applies a relatively small force component to the patient's face. That is, the first portion of the nozzle is lightly spring loaded to impart a relatively small force component to the patient's face through the nozzle. As a result, both the bottom portion and the nozzle provide a force to provide a seal between the nasal assembly and the patient's nasal cavity.

  Further, the bottom portion 348 may be configured to provide a force tailored in a desired direction, for example, an inwardly directed force to assist in sealing. The bottom portion 348 may undergo greater displacement in certain areas that provide additional force.

  FIG. 46 is a force diagram illustrating some of the forces generated when the nasal assembly 310 is attached to the patient's head. For example, the headgear tension exerts a force on the patient's face and the patient's nose and lips exert a force on the nasal assembly 310.

[Fourth exemplary embodiment]
52-58 illustrate another embodiment of a nasal assembly, indicated by reference numeral 410. As best shown in FIGS. 52 and 53, the nasal assembly 410 includes a frame 416 and a nozzle assembly 418 removably connected to the frame 416. A headgear assembly 420 is removably attached to the frame 416 to maintain the frame 416 and nozzle assembly 418 in a desired adjusted position on the patient's face. An intake conduit 474 is also removably attached to the frame 416 for transporting breathable gas into the frame 416 and nozzle assembly 418 for breathing by the patient. Headgear assembly 420 and intake conduit 474 are removably connected to frame 416 by intake conduit and headgear connection assembly 422. The connection assembly 422 includes a first connector portion 424 (see FIGS. 55 and 56) provided by the frame 416 and a second connector portion 426 configured to be removably coupled to the first connector portion 424. Prepare. The second connector portion 426 is removably or fixedly connected to the headgear assembly 420 and the intake conduit 474, as will be further discussed.

  As shown in FIGS. 52 and 54, the frame 416 includes a main body 428 formed with a central opening 430 for receiving the nozzle assembly 418. The frame 416 also includes side frame members 432 provided on each lateral side of the main body 428. Each side frame member 432 includes a first connector portion 424 formed integrally therewith. The first connector portion 424 is in the form of a crossbar 466 (see FIGS. 55 and 56). As best shown in FIG. 54, the main body 428 includes a rim 446 that defines a central opening 430.

  As shown in FIG. 54, the nozzle assembly 418 includes a gusset portion 448 and a pair of nozzles 450 attached thereto. Gusset portion 448 includes a sidewall 452 configured to sealingly engage a rim 446 that surrounds an opening 430 in frame 416. For example, the side wall 452 of the gusset portion 448 may include a recess configured to snap together with each tab provided on the rim 446 of the frame 416. However, the nozzle assembly 418 may be removably attached to the frame 416 in any other suitable manner, such as, for example, a friction fit. When nozzle assembly 418 is attached to frame 416, nozzle assembly 418 and frame 416 together form a conduit for directing breathable gas through a pair of nozzles 450 to the patient's nose.

The nozzle 450 is designed and configured in the same manner as the nozzle 50 described above. The frame 416 may be formed with one or more openings (not shown) for the outflow of discharged CO ₂ .

  As shown in FIG. 55, the second connector portion 426 includes a main body having a front portion 460 and a rear portion 462. The front portion 460 includes a pair of arm members 461 having an integral lug 463 at the distal end thereof. In use, the arm member 461 moves the arm member 461 back outward so that the shoulder of the lug 463 is positioned to interlock the second connector portion 426 with the first connector portion 424. Until the position is reached, it is bent inward by the crossbar 466 of the first connector portion 424 (see FIG. 56).

  The arm member 461 of the second connector portion 426 may rotate relative to the cross bar 466 of the first connector portion 424. As shown in FIG. 55, the protrusion 465 selectively engages with a series of indentations provided on the inner surface of the crossbar 466 to provide a predetermined number of settings for alignment of the nozzle 450 with respect to the patient's nasal cavity. It may be provided on the arm member 461.

  As shown in FIG. 55, the rear portion 462 includes a pair of conduits 472 configured to be connected to intake conduits that transfer breathable gas to the frame 416 and nozzle assembly 418. The rear portion 462 of the second connector portion 426 also includes a crossbar or opening (not shown) through which the strap of the headgear assembly 420 passes or is removably connected.

  As shown in FIGS. 52 and 53, the nasal assembly 410 includes one intake conduit 474. A first end of conduit 474 is connected to each second connector portion 426 connected to frame 416. The second end of the pair of conduits 474 is connected to a pressurized supply that supplies pressurized breathable gas. As shown in FIG. 52, the second connector portion 426 is configured to route the intake conduit 474 so that it extends upwardly over the patient's head or, for example, downwardly under the patient's chin. , May rotate relative to the first connector portion 424.

  As a result, pressurized gas can pass through first and second pairs of intake conduits 474 and into frame 416 and nozzle assembly 418 and through nozzle 450 for breathing by the patient.

  FIG. 53 shows a flow generator connector 484 configured to interconnect the second end of the second pair of intake conduits 474 with a pressurized source.

  As shown in FIG. 52, the intake conduit 474 provides a double air flow path to prevent twisting and facilitate connection. However, conduit 474, connector portions 424, 426, and connector 484 may be configured to provide one air flow passage or more than one air flow passage.

  A headgear assembly 420 is removably attached to a second connector portion 426 attached to the frame 416 to maintain the frame 416 and nozzle assembly 418 in a desired adjusted position on the patient's face. As shown in FIGS. 52 and 53, the headgear assembly 420 includes two side portions 492 that include a rear portion 494 that connects the side portions 492. Each side portion 492 includes a side strap 496. A rear portion 494 that interconnects the two side portions 492 includes an upper strap 498 that passes over the top of the patient's head and a rear strap 499 that passes around the rear portion of the patient's head. However, the headgear assembly may be permanently attached to the frame.

  Each side strap 496 has a reduced width that allows the side strap 496 to be wrapped around a crossbar provided on the second connector portion 426. Fixing the side straps 496 to each crossbar or opening is aided by the use of a hook loop material such as Velcro®. In this way, the side strap 496 can be adjusted relative to the second connector portion 426 for proper fit.

  In the illustrated embodiment, the headgear assembly 420 is manufactured as a unitary structure. However, the headgear assembly 420 may comprise a plurality of straps suitably configured to support the nasal assembly 410 on the patient's head. As shown in FIGS. 52 and 53, the headgear assembly 420 may include a retention strap 493 to hold the intake conduit 474 upward over the patient's head.

  57 and 58 show the nasal assembly 410 engaged with the nasal cavity 12 of the patient's nose. Similar to the nasal assembly 10 described above, the force provided by the bottom portion 448 along with air pressure provides an effective sealing force on the patient's nasal cavity 12. Thus, the gusset portion 448 reduces the headgear assembly tension required to achieve a proper seal. The position of the nozzle 450 may also be adjusted relative to the user's nose to improve patient comfort.

  As shown in FIG. 58, for example, the gusset portion constitutes a flexible structure to apply a relatively large force component to the patient's face when inflated. Conversely, the nozzle is a more rigid structure that applies a relatively small force component to the patient's face. That is, the first portion of the nozzle is lightly spring loaded to impart a relatively small force component to the patient's face through the nozzle. As a result, both the bottom portion and the nozzle provide a force to provide a seal between the nasal assembly and the patient's nasal cavity.

[Fifth exemplary embodiment]
59-85 show another embodiment of the nasal assembly shown at 510. The nasal assembly 510 includes a frame 516 and a nozzle assembly 518 removably connected to the frame 516. As best shown in FIG. 61, the frame 516 includes a pair of first connector portions 524. Returning to FIG. 59, a pair of intake conduits 574 are configured to transport breathable gas into the frame 516 and nozzle assembly 518 for breathing by the patient. Breathable gas is transferred from intake conduit 574 to frame 516 and nozzle assembly 518 via, for example, a pair of second connector portions 526 and a pair of angle connectors 542. The second connector portion 526 is detachably and rotatably connected to each first connector portion 524 (FIG. 61) of the frame 516. An angle connector 542 is connected or disposed between the second connector portion 526 and each intake conduit 574. (A) a pair of second connector portions 526 and / or (b) so that the headgear assembly 520 maintains the frame 516 and nozzle assembly 518 in a desired adjusted position on the patient's face, as further described. ) Removably attached to the angle connector 542.

  As shown in FIG. 61, the frame 516 includes a main body 528 and side frame members 532 provided on each lateral side surface of the main body 528. Each side frame member 532 includes a first connector portion 524 formed integrally therewith. The first connector portion 524 is in the form of a conduit 564 having an annular recess 566 on its inner surface. The main body 528 includes elongated passages 565 on both sides thereof, and each side frame member 532 includes an annular passage 567. The passages 565, 567 are configured to receive the end of the nozzle assembly 518, as will be discussed further.

As shown in FIGS. 61-65, the nozzle assembly 518 includes a gusset or bottom portion 548 and a pair of nozzles 550 attached thereto. The nozzle assembly 518 is coupled to a frame 516 that includes a pair of nozzles 550 configured to sealingly engage the nasal cavity of the patient's nose during use and provide a seal between the nasal assembly 510 and the patient's nasal cavity. The nozzle 550 is designed and configured in the same manner as the nozzle 50 described above. The nozzle assembly 518 is also formed with one or more openings 549 for the outflow of exhausted CO ₂ .

  65A is an enlarged view of the nozzle assembly 518 shown in FIG. The nozzle assembly preferably comprises an upper profile portion 519 that maintains substantially the same cross-sectional area throughout the assembly. Thus, the assembly substantially follows the face line so as not to protrude from the face, thereby maintaining a low profile shape. Similarly, FIG. 119 shows a nozzle or cushion assembly 604 that substantially follows the contour of the face as viewed from above.

  The nozzle assembly 518 of FIG. 65A also shows a lower contour portion 521 that substantially conforms to the facial contour. Also, the nozzle assembly 518 is asymmetric with respect to axis A to provide a better fit compared to prior art masks that may be curved or buckled during dispensing to fit the face. The lower profile 521 is also useful for patients with wrinkles.

  Force from a patient interface retainer, eg, headgear, is transmitted to the face via the nozzle 550 as well as the lower contoured portion 521. Increasing the total area decreases the force per unit area and distributes the load. The increase in total area also helps to better secure the patient interface. The shape of the lower contour portion 521 can be customized. The lower profile portion 521 may be rigid, semi-rigid, resilient, or some combination thereof. The upper jaw region of the face can withstand greater pressure without discomfort.

  FIG. 65B schematically shows the distribution of force with increasing area. In particular, the area just below the nose is only soft tissue and cartridges.

  If the only contact area is just below the nose (ie does not include the upper jaw), holding the nozzle in place with minimal force requires a resultant force in direction F1. This deforms the nose and causes discomfort. When such a strap is tightened, it slides down from the front of the head. However, when some of the load is taken up by the upper jaw (ie, some of the force is below the nose and some is on the upper jaw), the direction of the resultant force can be changed to F2 and the load is distributed. The Since the upper jaw does not move, F2 can be increased without causing discomfort. Such a configuration can withstand over-tightening. There is also a possibility of fitting in the back of the head.

  In the illustrated embodiment, a nozzle assembly 518 wraps around the main body 528 and each side frame member 532 of the frame 516 and is secured to the frame 516 by clips 530. In another embodiment, the cushion is pulled over the frame like a sock. An annular passage 567 is formed in each side frame member 532 and the side portion 536 of the nozzle assembly 518 wraps around the groove 567. In particular, as shown in FIG. 61, the nozzle assembly 518 has a substantially open-ended tube shape with a longitudinal opening. This shape provides the nozzle assembly 518 with one opposing spaced end portion 534 and side portion 536. When the nozzle assembly 518 is coupled with the frame 516, as best shown in FIGS. 64 and 68, the side portions 536 engage within each annular passage 567 and the end portions 534 are on opposite sides of the main body 528. To engage within each elongated passage 565.

  As best shown in FIGS. 62-64 and 66, end portion 534 is secured between frame 516 and clip 530. That is, the end portion 534 is fixed between the flanges of the opposing passages 565 and the clip 530. When nozzle assembly 518 is attached to frame 516, nozzle assembly 518 and frame 516 together form a conduit for directing breathable gas through a pair of nozzles 550 to the patient's nose.

  Clip 530 may engage frame 516 and nozzle assembly 518 in any suitable manner. For example, the clip 530 may slide into the frame 516 as shown in FIGS. Alternatively, the clip 530 may engage the frame 516 by a snap fit.

  As shown in FIG. 59, a frame 516 is secured to the nozzle assembly 518 so that it tilts away from the patient's upper lip during use. This places the clip 530 away from the patient so that the clip does not irritate the patient's face. The nozzle assembly 518 may also be contoured to correspond to the patient's nasal septum during use.

  The combination of frame 516 and nozzle assembly 518 described above allows nozzle assembly 518 to be easily removable from frame 516 to facilitate cleaning of nozzle assembly 518. The shape of the nozzle assembly 518 also allows the internal portion of the nozzle assembly 518 to be accessible for cleaning. The shape of the nozzle assembly also facilitates manufacture.

  However, the nozzle assembly 518 may be removably attached to the frame 516 in any other suitable manner. For example, FIGS. 67, 69 and 71 show another method of attaching the nozzle assembly to the frame. As shown, the frame 616 is configured without a passage in the main body so that the nozzle assembly 618 wraps around the main body, and the clip 630 holds the end portion of the nozzle assembly 618. It is fixed between the side frame members of the frame 616.

  As shown in FIG. 72, the second connector portion 526 includes a main body having a front portion 560 and a rear portion 562. A groove 561 is provided adjacent to the front portion 560. The front portion 560 includes an annular rib portion 540 (FIG. 73). A front portion 560 of the second connector portion 526 extends over each first connector portion 524 to provide an interference fit. Also, the rib portion 540 is configured to engage within a recess 566 in the first connector portion 524 to couple the first and second connector portions 524, 526 together as shown in FIG. . The second connector portion 526 can rotate relative to the first connector portion 524 by an infinite set amount to align the nozzle 550 with respect to the patient's nasal cavity. The setting may be optionally locked using, for example, friction. That is, the rotatable coupling allows the frame 516 to be rotated relative to the second connector portion 526 to adjust the position of the nozzle 550 relative to the patient's nose during use.

  The second connector portion 526 may be formed of silicone having a Shore A hardness of about 50-60. This hardness facilitates assembly, pivoting movement and sealing with the frame 516. However, the second connector portion 526 may be formed of any other suitable material and may have any suitable hardness.

  Each second connector portion 526 may also be formed with a shape that allows relative motion between angle connector 542 and frame 516 for various face widths. In the illustrated embodiment, the shape is a waveform 538 at the second angle connector 542. This shape insulates the connection between the second connector portion 526 and the frame 516 to prevent desorption. This shape also allows the second connector portion 526 to be flexible so as to damp the resistance of the tube. Further, the second connector portion 526 is flexible without obstructing airflow. However, the shape may have any other suitable configuration that provides flexibility.

  In the illustrated embodiment, each of the second connector portions 526 includes or is coupled to an angle connector 542 (see FIGS. 74-76) that connects with each intake conduit 574. The second connector portion 526 and the angle connector 542 may be formed as an integral single unit. The rear portion 562 of each second connector portion 526 includes an interlocking lock in the form of a relief groove 544 (FIG. 73) for engagement with the angle connector 542. The angle connector 542 is a conduit 545 that includes a shoulder portion 546 that engages the relief groove 544 to secure the angle connector 542 to the second connector portion 526 as determined in FIG. 73, an exploded view prior to connection. Is provided.

  Angle connector 542 includes an elongated connector 552 configured to engage each intake conduit 574. In the illustrated embodiment, the elongated connector 552 has a tapered shape to facilitate connection. The connector 552 is also configured to wedge the intake conduit 574 therebetween to secure the intake conduit 574 thereto. As shown in FIG. 76, the elongated connector 552 of the conduit 545 and the angle connector 542 are inclined about 80 ° relative to each other. However, the angle between the conduit 545 and the elongated connector 552 may have any other suitable dimensions.

  FIG. 76A shows another embodiment of a mask assembly similar to FIG. FIG. 76B is an exploded view of the mask assembly of FIG. 76A. The yoke 580 ′ of FIGS. 76A and 76B is illustrated in that the yoke 580 ′ of FIGS. 76A and 76B is more streamlined, shaped and / or optimized for use with the headgear assembly strap. It is somewhat different from the yoke 580 shown at 60. Also, the second connector portion 526 ′ and the elbow connector 542 ′ of FIG. 76A are configured to facilitate alignment (or prevent misalignment) between them. In particular, as best shown in FIG. 76C, the second connector portion 526 'includes a tab 526a configured to be received within the keyway or recess 542a of the elbow connector 542'. The elbow connector 542 'also includes a ridge 542b that receives the tip portion of the tab 526A.

  Returning to FIG. 59, the first end of a pair of conduits 574 is connected to each angle connector 542. The second end of the pair of conduits 574 is coupled to or connected to a flow generator connector 584 that includes or includes a swivel 590 that further provides pressurized breathable gas. In communication with a pressurized supply. As shown, angle connector 542 rotates a pair of inlet conduits 574 downwardly under the patient's chin.

  As a result, pressurized gas can pass through a pair of conduits 574, angle connector 542, second connector portion 526, frame 516 and nozzle assembly 518, and nozzle 550 for breathing by the patient. .

77 and 78 show a flow generator connector 584 configured to interconnect a second end of a second pair of intake conduits 574 with a swivel 590 that communicates with a pressurized source. The flow generator connector 584 includes a first elongate conduit 586 configured to engage one of the intake conduits 574 and a second elongate conduit 588 configured to engage the other of the intake conduits 574. . In the illustrated embodiment, the first and second elongate conduits 586, 588 have a tapered shape to facilitate connection, eg, the top is formed at an angle. Also, the first and second elongate conduits 586, 588 are configured to wedge each intake conduit 574 therebetween, for example, by friction, to secure each intake conduit 574 thereto. The flow generator connector 584 also has a substantially Y-shape, with the first elongate conduit 586 inclined relative to the second elongate conduit 588. The Y shape of the flow generator connector 584 prevents inaccurate assembly with the intake conduit 574 and helps fuse the air path. As shown in FIG. 59, a swivel 590 may be attached to the flow generator connector 584 to allow relative motion with the pressurized supply.

  As shown in FIG. 79, each intake conduit 574 includes a plurality of passages. In the illustrated embodiment, each intake conduit 574 is manufactured with a tube that prevents or at least reduces twisting and blockage and provides a double air flow path to facilitate connection. However, the conduit 574, angle connector 542 and connector 584 may be configured to provide one air flow passage or more than one air flow passage. The intake conduit 574 may be formed of silicone having a hardness of about 50 Shore A hardness. However, the intake conduit 574 may be formed of any other suitable material and may have any suitable hardness.

Intake conduit 574 is configured to provide a low impedance. In one embodiment, the intake conduit 574 provides an impedance of less than about 3 cmH ₂ 0 for a given flow rate. The intake conduit 574 also has a low profile. As shown in FIG. 79, each intake conduit 574 has a width of about 20 mm and a height of about 9.5 mm. However, the intake conduit 574 may have any other suitable shape, size and configuration. For example, the intake conduit 574 may have a substantially D-shaped cross section. The width dimension of 20 mm can be adjusted to change the impedance. For example, if the width decreases while keeping the height and pressure constant, the impedance increases because the cross-sectional area decreases. Conversely, if the width increases while keeping the height and pressure constant, the impedance can be reduced. As a result, the impedance can be reduced without increasing the height, thereby maintaining a low profile of the intake conduit 574, so that they do not interfere with the patient and / or the patient. Does not get into the face or skin. Other components of the air transfer path, such as the angle connector 542, are made of steel in view of reducing impedance. In contrast, the impedance of an intake conduit or angle connector with a curved cross-section can be similarly reduced by increasing the diameter of the conduit, but the conduit further assumes a position outside the patient's face. And / or because the conduit presses against the patient's face, the profile increases with corresponding discomfort to the patient, reducing comfort and followability.

  A headgear assembly 520 is removably attached to the second connector portion 526 and the angle connector 542 to hold the second connector portion 526 on the frame 516. The headgear assembly 520 may also be used to avoid or reduce the opportunity for tube tension to be applied to the nozzle assembly, which can compromise the seal between the nozzle and the patient's airway. The frame 516 is configured to transmit the tensile force of the tube.

  As shown in FIGS. 59 and 60, the headgear assembly 520 includes two side portions 592 that include a rear portion 594 that connects the side portions 592. The side portion 592 includes a side strap and a headgear yoke 580 attached to each side strap. Headgear yoke 580 acts as a stiffener to add rigidity to headgear assembly 520. 59 and 60 show slightly different yoke shapes. In FIG. 59, the yoke is shown as a member covering at least a portion of the flexible straps 598, 599 to add rigidity or stiffness to it. In FIG. 60, the yoke 580 is a semi-rigid layer, such as a stitched plastic, provided on the headgear straps 598 and / or 599. The yoke 580 of FIG. 60 is also shown in FIGS. The rear portion 594 includes an upper strap 598 that passes over the top of the patient's head and a rear strap 599 that passes around the rear portion of the patient's head. Upper strap 598 is configured to adjust the sealing force to pull frame 516 into the patient's nose. The rear strap 599 is configured to adjust the stability of the nasal assembly 510 to pull the frame 516 back to the patient's face on the patient's upper lip.

  The upper straps 598 are coupled together by a headgear buckle 570. Headgear buckle 570 is configured to allow symmetrical adjustment of headgear assembly 520. In particular, as shown in FIG. 83, the headgear buckle 570 includes a first locking portion 571 and a second locking portion 572. The first locking portion 571 is configured to be detachably and adjustably coupled to one of the upper straps 598 extending from one of the headgear yokes 580, and the second locking portion 572 is configured to be connected to the headgear yoke 580. It is configured to detachably and adjustably couple with the other of the upper strap 598 extending from the other. Each of the upper straps 598 may be wrapped around the crossbar of the associated locking portion 571, 572 of the buckle 570, as best shown in FIG. Tabs 576 are provided on each locking portion 571, 572 to facilitate the patient adjusting headgear assembly tension. The headgear buckle 570 also includes a curved surface 578 that prevents the buckle 570 from contacting the patient's head. The rear straps 599 may be coupled together by a buckle (as in the upper strap 598) or in any other suitable manner.

  The headgear yoke 580 of the headgear assembly 520 includes a retaining member 581 that engages each second connector portion 526 to retain the second connector portion 526 on the frame 516. In the illustrated embodiment, the retaining member 581 is ring-shaped and surrounds each second connector portion 526. As shown in FIG. 73, the ring-shaped holding member 581 engages in an annular groove 561 in each second connector portion 526 so as to fix and hold the second connector portion 526 on the frame 516. It has an annular projection.

  In addition, the pair of holding members 581 engages with the grooves 561 (FIG. 72) provided in the second connector portion 526 so that the force of the headgear is transmitted to the frame 516. This allows for more precise alignment of the force applied to the frame 516 by the headgear assembly 520. Further, the headgear buckle 570 is positioned in the center of the patient's head to allow for symmetrical adjustment of the headgear assembly 520 and thus adjustment of the headgear force applied to the frame 516.

  Angle connector 542 of second connector portion 526 is releasably interlockable with headgear assembly 520. In particular, the angle connector 542 includes a first locking member 554 (see FIG. 74B) that can be locked together with a second locking member 556 (see FIG. 80) provided on the headgear yoke 580 of the headgear assembly 520. Prepare. In the illustrated embodiment, the first locking member 554 is a hook-shaped member that interlocks with the crossbar provided by the second locking member 556, as shown in FIGS. The locking member is tapered and configured to retain a low profile.

  84 and 85 show the nasal assembly 510 engaged with the wearer's nasal cavity. As shown in FIG. 84, the nasal assembly 510 is configured such that the angle connector is tilted approximately 10 ° below the horizontal plane to avoid contact of the nasal assembly 510 with the patient's cheekbone. FIG. 84 also shows that the clip 530 that holds the bifurcated end of the nozzle assembly tilts upward and outward away from the patient's lips to prevent inadvertent contact with the patient. The angle is in the range of 10 to 90 degrees, preferably 20 to 60 degrees, or about 30 degrees. As shown in FIG. 85, the second connector connection portion 526 is inclined by about 55 ° from the frame 516. The waveform 538 (see FIG. 73) may be provided to bend (inward and outward) to accommodate patients having different width faces. However, the angles noted above are exemplary only, and nasal assembly 510 may be configured to provide any angle suitable for the patient's face.

  Similar to the nasal assembly described above, the expansion of the gusset or bottom portion 548, along with the tension of the headgear assembly, provides an effective sealing force against the patient's nasal cavity. Also, the elasticity of the nozzle 550 provides additional sealing power.

[Sixth exemplary embodiment]
86-88 illustrate another embodiment of the nasal assembly 10 configured to deliver breathable gas to the nasal cavity 12 of the patient's nose 14 (see FIGS. 97A and 97B). The nasal assembly 10 includes a flexible conduit 16, a gusset portion 18, a pair of nozzles 20, 22, and a headgear connector 25. The flexible conduit 16 has a portion configured to receive a source of compressed breathable gas and a patient side 24. The gusset portion 18 includes a first side 26 (see FIG. 89) attached to the patient side 24 of the flexible conduit 16 and a second side 28. A pair of nozzles 20, 22 are in sealing engagement with the first portion 30 attached to the second side 28 of the gusset portion 18 and the nasal cavity 12 of the patient's nose 14 during use, respectively. And a second portion 32 configured to provide a seal between the patient's nasal cavity 12 (see FIG. 90). A headgear connector 25 attaches the flexible conduit 16 to a headgear assembly disposed on the patient's head. The gusset portion 18 is configured to be able to expand and contract to change the distance between the conduit 16 and the pair of nozzles 20, 22, as discussed further below.

  Alternatively, the gusset portion can be removed due to a more rigid structure that in some cases does not significantly allow for expansion or contraction. Instead, as described above in connection with other primarily illustrated embodiments, the nozzle is at a certain initial tension (before the mask is used, eg, pressurized) the patient. It may be configured to engage with the nose. This initial tension can be achieved by pressurizing the nozzle axially or longitudinally.

  In the illustrated embodiment, the flexible conduit 16 comprises a central conduit 34, a pair of intake conduits 36, 38 connected to the central conduit 34 by respective intake connectors 40, 42, and the intake conduits 36, 38. And a Y-shaped intake connector 44 to be interconnected. The Y-shaped intake connector 44 is configured to be connected to a conduit connected to the pressure supply unit. The pressurized supply supplies pressurized breathable gas through the intake conduits 36, 38 and the central conduit 34 for breathing by the patient, into the gusset portion 18, and into the nozzles 20, 22. .

  As shown in FIG. 89, the central conduit 34 includes an upper portion 46 and a lower portion 48 that are coupled together. Each of the upper and lower portions 46, 48 has an arcuate transverse cross section to form a conduit when the upper and lower portions 46, 48 are joined together at their respective edges. In the illustrated embodiment, the upper and lower portions 46, 48 are rigidly joined together by an adhesive such as glue, for example. However, the upper and lower portions 46, 48 may be rigidly connected to each other by any other suitable means such as a fixture. Alternatively, the upper and lower portions 46, 48 may be removably coupled to each other or may be formed from a single piece.

  As shown in FIGS. 86, 88, 90, and 92 to 95, the upper and lower portions 46, 48 have a substantially C-shape when viewed from above. In particular, each of the upper and lower portions 46, 48 includes an elongated central section 50 and curved end sections 52, 54. However, the upper and lower portions 46, 48 may have any other suitable shape, such as an elongated shape, as shown in FIG.

  Each of the curved end sections 52, 54 includes a groove 56, for example, as shown in FIG. When the upper and lower portions 46, 48 are joined together, a groove 56 holds each intake connector 40, 42, as will be discussed further. At least one of the upper and lower portions 46, 48 includes a counter-crushing rib 58 that prevents the central conduit 34 from deforming, which can prevent air flow therethrough. In FIG. 89, grooves 56 are formed at both ends thereof.

  As shown in FIG. 89, an opening 60 is formed in the upper portion 46 of the central conduit 34. The gusset portion 18, in the form of an inflatable and retractable pillow, comprises a side wall 26 that is a first side and a side wall 28 that is a second side that define a space therebetween. The first side wall 26 is attached to the upper portion 46. The first side wall 26 includes an intake opening that communicates with the opening 60 in the upper portion 46. The second side wall 28 has a pair of discharge openings. The connection between the gusset portion 18 and the upper portion 46 of the central conduit 34 allows relative movement between the gusset portion 18 and the central conduit 34 to increase comfort and accommodate for a variety of patient face shapes. This is done with a flexible connection that allows.

  In the illustrated embodiment, the gusset portion 18 has a substantially rectangular shape. However, the gusset portion 18 provides a sensitive area of the patient's face, such as a substantially circular or curved cross-section, or a notched gusset shape, for example, to prevent contact with the patient's nasal septum. It may be any other suitable shape, including a shape to avoid.

  Each pair of nozzles 20, 22 has a first portion 30 attached to a second sidewall 28 of the gusset portion 18 that communicates with each discharge opening of the gusset portion 18. The second portion 32 of each nozzle 20, 22 is configured to sealingly engage the nasal cavity 12 of the patient 14 and provide a seal between the nasal assembly 10 and the patient's nasal cavity 12 during use. In the illustrated embodiment, the nozzles 20, 22 are contoured with a second portion 32 that seals the underside of the nostril and another portion that enters the patient's nasal cavity during use ( (For example, tapered, conical, hollow frustoconical, etc.) in the form of a nose pillow. However, the nozzles 20, 22 may be, for example, in the form of nasal prongs, cannulas or nasal puffs and may be sealingly engaged with the nasal cavity 12 in any suitable manner. For example, the nozzles 20, 22 may seal within the nasal cavity 12, seal against the nasal cavity 12, seal around the nasal cavity 12, or a combination thereof. The nozzles 20, 22 may include corrugated flexible portions that allow the nozzles 20, 22 to move relative to the gusset portion 18 and the central conduit 34. The nozzles 20, 22 may be contoured to match the contour shape inside the patient's nose 14.

  In one embodiment, the nasal assembly uses a patient-specific nozzle that is removably mounted. In a preferred form, the nozzle is made from a substantially flexible polymeric material such as a silicone elastomer. A unique nozzle can be adapted to each patient's nose by first scanning each patient's nose on-site or remotely and then using the data for interface, e.g. mold manufacturer manufacture it can. Scanning can be performed using non-contact or contact methods. Non-contact methods are, for example, by photography, by physical contact with the probe, or by collecting impressions inside the nostrils of the desired contact interface. After a pair of suitable nozzles have been fabricated, they are sent to the customer to be adapted to the patient. The advantage of a pre-formed or customized shape is that the cross-sectional area is maximized to reduce flow resistance.

  Also, the use of a pre-formed shape improves comfort and has greater resistance to torsion, thus minimizing torsion of the patient's nostril nozzles, such as semi-rigid plastics. Larger materials may be used. Also, rigid plastics that allow for thin wall cross-sections and flexible nozzles may be used due to their flexible connection with the gusset portion, for example the gusset portion.

  In the illustrated embodiment, the upper portion 46 of the central conduit 34 is integrally molded from the deformable and inflatable material with the gusset portion 18 and the nozzles or nose pillows 20, 22. The central conduit 34, the nasal pillows 20, 22 and the gusset portion 18 may be manufactured from a flexible skin compatible material such as silicone. The central conduit 34, nasal pillows 20, 22 and gusset portion 18 may be formed, for example, by injection, compression and / or transfer molding, as is known in the art.

  However, the central conduit 34, the nasal pillows 20, 22 and the gusset portion 18 may be formed of any suitable material and may be formed of any suitable process. For example, the central conduit 34, gusset portion 18 and nasal pillows 20, 22 may be formed separately and permanently attached to each other, for example, with an adhesive and / or mechanical fastener. Alternatively, central conduit 34, gusset portion 18 and nasal pillows 20, 22 may be formed separately and removably attached to each other.

The lower portion 48 of the central conduit 34 includes an exhaust port 62 and a pair of tapered or hooked projections 64 configured to hold the headgear connector 25 against the central conduit 34. The exhaust port 62 is aligned with the opening 60 in the upper portion 46. Exhaust port 62, from the central duct 34 is slightly projected outward, a series of openings 66 for the outflow of CO ₂ is formed.

  As shown in FIG. 89, the headgear connector 25 is configured to receive a pair of openings 68 configured to receive each protrusion 64 of the lower portion 48 therethrough and an exhaust port 62 therethrough. In the form of an elongated strap with a central opening 70. In particular, the opening 68 presses the tapered or hooked protrusion 64 to hold and position the headgear connector 25 relative to the central conduit 34.

  The headgear connector 25 also includes a connection structure 72 at its free end for connection with a headgear assembly (not shown). The headgear assembly is removably connected to the connection structure 72 to maintain the nasal assembly 10 in a desired position on the patient's face. For example, the headgear assembly may include a strap removably connected to each connection structure 72.

  As shown in FIG. 91, the connector structure 72 may have a curved edge. Moreover, the openings 68 and 70 may have any appropriate shape (for example, an oval, a circle, a rectangle, etc.). For example, FIG. 91 shows substantially elliptical openings 68, 70, and FIG. 89 shows a substantially circular opening 68 and an opening 70 having a substantially rectangular shape.

  The headgear connector 25 is made of a deformable and resilient material that can be deformed, for example, around the patient's face in use and in at least one bending plane. For example, the headgear connector 25 may be made of polypropylene or other suitable polymer. Further, the headgear connector 25 may be manufactured by a combination of materials such as a natural or artificial fiber material or a laminated structure. The headgear connector 25 is deformable so that it can conform to the contours of the patient's face when the nasal assembly 10 is worn on the patient's head. The headgear connector 25 also supports the tension applied by the headgear assembly and prevents the tension from pulling and substantially deforming the flexible central conduit 16.

  However, the headgear connector 25 may have any suitable structure for connection with the headgear assembly. For example, the headgear connector 25 is a protrusion 64 provided on the central conduit 34 and the headgear assembly may be attached directly to the protrusion 64. Alternatively, the headgear connector may be in the form of a locking clip receiver assembly configured to connect with each locking clip provided on the headgear assembly. Details of the locking clip receiver assembly and locking clip are described in Moore et al. US provisional applications 60 / 377,254, 60 / 397,195, the entire contents of which are incorporated herein by reference. , 60 / 402,509.

  The central conduit 34 is connected to a pair of intake conduits 36, 38 by intake connectors 40, 42. As shown in FIG. 97, each intake connector 40, 42 includes a first conduit portion 74 that branches into a pair of second conduit portions 76. The first conduit portion 74 includes a radially inflating flange 78 received in each groove 56 provided beside the central conduit 34 on its end sections 52, 54. In this way, the first intake connector 40 is held against the opposite end section 52 of the central conduit 34 and the second intake connector 42 is against the opposite end section 54 of the central conduit 34. Held.

  The intake conduits 36, 38 may each have a first end connected to each intake connector 40, 42 and a second end connected to a Y-shaped intake connector 44. . As shown in FIG. 96, each of the intake conduits 36, 38 includes first and second passages 80, 82. A pair of second conduit portions 76 of the intake connectors 40, 42 couple the intake connectors 40, 42 with each first end of the intake conduits 36, 38 for receiving conduits 36, 38. Through the first and second passages 80, 82 at the first end of the first end. Intake connectors 40, 42 and intake conduits 36, 38 may be held by friction fitting, mechanical fasteners, adhesives, co-molding, insert molding, or any other suitable means.

  As shown in FIG. 96A, the Y-shaped connector 44 includes a first connector 84 connected to one second end of the intake conduit 36 and the other second end of the intake conduit 38. And a third connector 88 connected to a pressurized supply for transferring pressurized gas to the nasal assembly 10. Each of the first and second connectors 84, 86 has first and second passages 80, 82 in the intake conduits 36, 38 to couple the Y-shaped connector 44 with each intake conduit 36, 38. A pair of conduit portions 90 inserted therethrough. The third connector 88 may comprise a swivel mechanism for allowing relative movement between the Y-shaped connector 44 and a transfer conduit connected to the pressurized supply. The Y-shaped connector 44 and intake conduits 36, 38 may be held by friction fitting, mechanical fasteners, adhesives, welding, insert molding, or any other suitable means.

  As shown in FIG. 98, the central conduit 34 and the intake conduits 36, 38 are those disclosed at the beginning of US Pat. No. 6,044,844, the entire contents of which are incorporated herein by reference. For example, the tube may be formed of a pressure-resistant, anti-crushable, or anti-twisting tube.

  Pressurized gas enters through the connector 88 of the Y-shaped connector 44 and travels through the first and second intake conduits 36, 38 into the end sections of the central conduit 34. Air passes through central conduit 32 into gusset portion 18 and nasal pillows 20, 22 and into patient nasal cavity 12. Exhaled air from the patient's nose can exit through an exhaust port 62 provided in the central conduit 34.

  As best shown in FIGS. 86 and 89, the gusset portion 18 extends outwardly from the central conduit 34 to provide additional surface area or footprint. As air under pressure enters the central conduit 34, both the central conduit 34 and the gusset portion 18 expand, sealingly engaging the nasal pillows 20, 22 with the patient's nasal cavity 12. However, the central conduit 34 is not inflatable with the gusset portion 18. That is, the gusset portion 18 is configured to be able to expand and contract to change the distance between the central conduit 34 and the nasal pillows 20, 22. The gusset portion 18 includes a first position (see FIG. 97A) where the nasal pillows 20, 22 are adjacent to the patient's nostril 12, and a second position (see FIG. 97A) where the nasal pillows 20, 22 are sealingly engaged with the patient's nasal cavity 12. The nose pillows 20 and 22 are moved between them (see FIG. 97B). In particular, when not pressurized with gas, the gusset portion 18 does not expand and has a substantially flat configuration. However, the gusset portion 18 does not have a substantially flat configuration when not inflated. In the uninflated state, the nasal pillows 20, 22 are spaced from or slightly in contact with the patient's nasal cavity 12. When the nasal cavity 10 is pressurized with gas, the gusset portion 18 expands and sealingly engages the nasal pillows 20, 22 with the patient's nasal cavity 12 to provide a seal between the nasal assembly 10 and the patient's nasal cavity 12. . As the gas pressure is increased, the force applied to the underside of the nasal cavity 12 increases through the gusset portion 18.

  The gusset portion 18 provides additional surface area or footprint to the central conduit 34, which in turn provides additional forces on the nasal pillows 20, 22 that increase the sealing efficiency of the nasal pillows 20, 22. That is, the gusset portion 18 is constructed and arranged to bring the nasal pillows 20, 22 in contact with the patient's nose. The force or pressure on the patient's nose is proportional to the pressure in the central conduit 34 and the additional surface area of the gusset portion 18. In this way, the surface area of the gusset portion 18 may be changed to change the force or pressure applied to the patient's nose.

  Gusset portion 18 reduces the headgear assembly tension required to achieve a proper seal. That is, the sealing force applied to the patient's nose may be provided by the gusset portion 18 rather than by tension by the headgear assembly. This improves patient comfort as well as sealing characteristics.

  Therefore, when adjusting the headgear assembly, it is desirable to bring the nose pillows 20, 22 only near the patient's nose, or make very light contact. In this way, the gusset portion 18 is not substantially compressed.

  The gusset portion 18 may comprise a connecting wall between its side walls 26, 28. The connecting wall acts as a spring configuration to impart a force component to the patient's face through the nose pillows 20,22. The force may be adjusted by adjusting the thickness of the connecting wall. Also, the thickness of the connecting wall may vary with the surface area provided by the gusset portion 18.

  The gusset portion 18 also forms a detachment joint between the central conduit 34 and the nasal pillows 20, 22 and thus allows some relative movement between the nasal assembly 10 and the user's face. As a result, the nasal pillows 20, 22 can accommodate small changes in the shape of the patient's nose without undue force, while maintaining an effective seal while maintaining the nasal assembly 10 relative to the patient's nose during use. Can deal with small exercises.

  Also, the gusset portion 18 need not be in the single gusset configuration discussed above, but can have an alternative shape. For example, the gusset portion 18 may be in the form of two or more gusset portions provided in succession.

  98-106 show another embodiment of the nasal assembly indicated by reference numeral 210. As best shown in FIGS. 98-100, the nasal assembly 210 includes a central conduit 234, a pair of intake conduits 236, 238 connected to the central conduit 234 (eg, by an adhesive), an intake An intake connector 244 interconnecting the conduits 236, 238. The intake connector 244 is configured to be connected to a conduit connected to the pressure supply unit. Intake connector 244 may be pivotable axially to maximize stability by reducing conduit twist.

  Gusset portion 218 includes first and second sidewalls 226, 228 that define a space therebetween. The first side wall 226 includes an intake opening that communicates with the opening 60 of the central conduit 234. The second side wall 228 has a pair of discharge openings. In the illustrated embodiment, the gusset portion 218 has a substantially bow-tie shape. However, the gusset portion 218 may have any other suitable shape.

  A pair of nozzles 220, 222 in the form of nasal pillows are provided. Each nose pillow 220, 222 has a first portion 230 attached to a second sidewall 228 of the gusset portion 218 that communicates with each discharge opening of the gusset portion 218. The respective second portion 232 of each nasal pillow 220, 222 is configured to sealingly engage the nasal cavity 12 of the patient's nose 14 and provide a seal between the nasal assembly 210 and the patient's nasal cavity 12 during use. The

  In the illustrated embodiment, the central conduit 234, the intake conduits 236, 238, the gusset portion 218 and the nasal pillows 220, 222 are manufactured from a flexible material such as silicone and attached to each other by an adhesive. However, the central conduit 234, the intake conduits 236, 238, the gusset portion 218, and the nasal pillows 220, 222 may be integrally formed or formed of any other suitable material in a suitable process. Good.

The central conduit 234 includes an exhaust 262 (FIGS. 100 and 101) that protrudes slightly outward therefrom for CO ₂ efflux. The headgear connector 225 is also in the form of a pair of clips 272 and is attached (eg, by an adhesive) to the conduits 234, 236, 238 for connection of the headgear assembly 206. The headgear assembly 206 includes a strap 207 that is removably connected to each clip 272 by hook loop fasteners, for example. As shown in FIGS. 101 and 102, a strap 207 passes over the patient's ear and engages a headcloth 208 disposed on the upper portion of the patient's head to cover the patient's occipital region. However, the headgear assembly 206 may have any suitable configuration for maintaining the nasal assembly 210 on the patient's head.

  103-106 show the nasal assembly 210 engaged with the outer edge of the nasal cavity 12 of the patient's nose 14. Similar to the nasal assembly 10 described above, when air under pressure enters the central conduit 234, both the central conduit 234 and the gusset portion 218 expand to seal the nasal pillows 220, 222 with the patient's nasal cavity 12. Engaged. However, the central conduit 234 is not inflatable with the gusset portion 218. That is, the gusset portion 218 is between a first position where the nasal pillows 220, 222 are adjacent to the patient's nostril 12 and a second position where the nasal pillows 220, 222 are in sealing engagement with the patient's nasal cavity 12. The nose pillows 220 and 222 are moved.

  In the embodiment of the nasal assembly 10, 210, the intake conduits 36, 38, 236, 238 extend downward from the nasal pillows 20, 22, 220, 222 away from the patient's head. However, as shown in FIG. 107, the nasal assembly indicated by reference numeral 310 is an overhead type assembly in which the intake conduit 336 extends upwardly from the nasal pillows 320, 322 over the patient's head.

  FIG. 107-1 shows an embodiment similar to that shown in FIG. 107 but with an adjustable frontal support 411. FIG. The frontal support portion 411 includes a first portion 413 provided attached to the tube support portion 415. The connection between the first part 413 and the tube support 415 allows adjustment of the second part 417 of the frontal support 411 relative to the patient's frontal area to achieve the best possible fit. Second portion 417 is described in US Pat. No. 6,119,693 or US patent application Ser. No. 10 / 655,595, the entire contents of which are incorporated herein by reference. A bridge 419 for supporting one or forehead cushion or pad 421, and a headgear connector portion 423 for a releasable connector with a headgear strap 425. US Pat. No. 6,374,826, the entire contents of which are incorporated herein by reference, or US Provisional Application No. 60, the entire contents of which are incorporated herein by reference. / 467,570 takes the form shown in the specification. The bridge 419 may include a central portion 427 configured to receive, guide and / or hold the upper portion of the air transfer tube when guided over the patient's head. The adjustment may be achieved via bending, bending and / or pivoting of the first portion 413 relative to the support 415. For example, the support 415 may include a pivot pin 429 that is introduced into an opening on the first portion 413. The support portion 415 and the first portion 413 may include a plurality of locking members to allow the frontal support portion 411 to be locked in place (eg, 3-5, preferably 4) in place. 431 (eg, protrusions and depressions).

  FIG. 107-2 is another implementation of an adjustable frontal support that operates as disclosed in US Pat. No. 6,532,961, the entire contents of which are incorporated herein by reference. The form is shown.

  107A-107C illustrate yet another alternative embodiment of the present invention. 107A is a perspective view of mask assembly 650 and FIG. 107B is a side view of the mask assembly shown in FIG. 107A. Mask assembly 650 includes headgear assembly 652 and nasal cushion assembly 654. The headgear assembly includes a parietal strap 654 and a occipital strap 656.

  The flexible tube 658 includes a first end 660 that includes a swivel connector. Tube 658 includes a suitable pressurized gas source. The tube includes a second end 662 provided attached to the cushion assembly 654. The tube 658 is supported by the support frame 664. The support frame includes a lower portion 666 that supports the cushion 668 of the cushion assembly 654. The support frame also includes a central portion 670 and an upper portion 672. Upper portion 672 is a flexible arm separated by a gap. The arms may be elastically deformed to allow insertion and removal of tubes between the arms. The support frame 664 may include a lateral support arm 674 configured to rest on the patient's forehead during use. Each lateral support arm 674 includes first and second connector slots 676 and 678 that provide connection points with the parietal strap 654 and the occipital strap 656, respectively.

  FIG. 107B is a side view of the mask assembly. 107C is an enlarged side view of a portion of the assembly 650 shown in FIGS. 107A and 107B. The lower portion 666 of the support frame 664 is configured to support a cushion 668 as shown here. The cushion 668 includes a pair of nozzles 680 (not shown) formed of a single piece with a plenum chamber 682.

  107D and 107E show yet another embodiment of the present invention. The mask assembly 690 and each of which extends from a branch between the parietal strap 694 and the occipital strap 696 and includes a parietal strap 694, an occipital strap 696, and a suspended arm strap 698 extending forward of the ear along the user's face. A headgear assembly 692; The upper portion of the dorsal strap 696 includes a suitable connector 700 such as a flexible arm shown in FIG. 107A. Alternatively, connector 700 takes the form of a VELCRO® loop that helps secure tube 702. Tube 702 includes a first end 704 that includes a swivel connector further connected to a suitable pressurized gas source via an air transfer tube. The tube 702 is routed over the top of the forehead and is substantially aligned with the patient's nose and bridge, but is spaced apart. Support frame 708 includes an upper portion 710 that helps maintain tube 702 in a desired position. Upper portion 710 may comprise a flexible arm, like upper portion 672 in FIG. 107A.

  Support 708 may comprise a pair of lateral arms 714 best shown in the side view of FIG. 107E. Each lateral arm 714 includes a connector slot 715 configured to receive the end of a suspended arm strap 698.

  FIG. 107F illustrates an alternative embodiment of a mask assembly 720 comprising a headgear assembly 722 having a shape substantially corresponding to the shape of the letter “X” comprising a first crossbar strap 724 and a second crossbar strap 726. Show. First and second crossbar straps 724 and 726 meet at a bifurcation or intersection 728. The front end of the second crossbar strap 726 includes a connector element 730 that takes the form of a VELCRO® loop. The connector element 730 includes a first end for connection with a relatively large bore tube 732 and a transition tube piece with a first end for accommodating the relatively small bore tube 734. It is configured to support and / or hold. A support frame 736 is provided to support the tube 734 and the cushion 738 at the position shown in FIG. 107F.

  FIG. 107G shows a mask assembly 750 according to yet another embodiment of the invention. Mask assembly 750 includes a headgear assembly 752 that includes a rear strap 754 and a frontal strap 756. Suspended arm strap 758 extends from the bifurcation between rear strap 754 and frontal strap 756. The one or more straps include a yoke member 759 that helps maintain the reinforcement and the position of the straps relative to each other. As shown in FIG. 107G, the mask assembly 750 includes a tube 760 with a first end 762 that includes a swivel connector that can be connected to an air transfer tube 764 that is further provided for a source of pressurized air. .

  As shown in FIG. 107H, each strap 758 has one or more arms 767 that are resiliently bent toward each other to insert and remove the connector portion 766 into and from the appropriate recess in the frame 768. A first connector portion 766 is provided. The frame 768 includes a connector portion 770 that receives and / or connects to the tube 760. As shown in FIG. 107H, only one portion of the nozzle 772 is visible.

  FIG. 107I illustrates another embodiment of the present invention. Mask assembly 780 includes a headgear assembly 782 that includes a rear strap 784 and a front strap 786. A tube 788 is connected to a branch connector 790 further connected to one or more flexible tubes 792 that follow and / or connect to the rear strap 784 on both sides of the user's head. The headgear assembly 782 may include a suspended arm strap 783 disposed along the cheek in front of the user's ear. Each tube 792 may be suitably attached to a suspended arm strap 783. Each tube 792 may be appropriately connected with a cushion assembly 794.

  FIG. 107J shows yet another embodiment of the present invention. Mask assembly 800 may include a headgear assembly, only a portion of which is shown. The headgear assembly may include a suspended arm strap 802 that supports a lateral support arm 804 connected to or attached to the cushion assembly 812. Each suspended arm strap 802 also includes a U-shaped coupling member having a first end connected to the air transfer tube 808 and a second end connected to the tube 810 connected to the cushion assembly 812. An interchange 806 taking the form may be supported.

  107K and 107L show yet another embodiment of the present invention. As shown in FIG. 107K, the cushion assembly includes a frame 820, a plenum or bellows chamber 824, and a pair of nozzles 826 attached to the plenum chamber 824. The cushion assembly may be supported by one or more support arms 822 as shown in FIG. 107K. Alternatively, the cushion assembly can be supported, for example, by a support frame as shown in FIG. 107A. As shown in FIG. 107K, the nozzle 826 has a relatively low profile to engage the patient's nostril. However, as shown in FIG. 107I, due to its elasticity, the nozzle 826 extends from the low profile position shown in FIG. 107K to the high profile position shown in FIG. 107L.

  107M-107Q illustrate various nozzles 832, 834, 836, 840, and 844 in accordance with the present invention. As shown in FIG. 107O, the nozzle may include a ridge 838 configured to rest on the edge of the nostril while the central portion 839 is received by the nostril. As shown in FIG. 107P, the nozzle 840 includes an incision 842 that is advantageous in avoiding or reducing the chance of scratching the center of the nose. As shown in FIG. 107Q, the nozzle 844 may include a protrusion 846 for deflecting air away from the nostril wall. FIG. 107R shows the position of the protrusion 846 on the nozzle in a perspective view.

[Seventh exemplary embodiment]
108-113 illustrate yet another preferred embodiment of the present invention. As shown in FIG. 108, the mask assembly 600 includes a headgear 602 and a cushion assembly 604, each of which is substantially similar to the headgear and cushion assembly 604 shown in FIGS. 60 and 61, respectively. Headgear 602 is configured to capture the patient's crown. Adjustment of the strap tension can be achieved by pulling the loose tab at the top of the head in both directions. The pulley direction is not aligned with the force of the nozzle assembly applied to the patient. Thus, the patient is more isolated from the strap adjustment force. The yoke provides stability to the sides. The yoke holds at least a part of the bottom shape of the headgear and facilitates mounting of the headgear. Because all headgear adjustments can be made at the back or top of the head, the headgear need not have adjustability towards the front of the face.

  In the embodiment shown in FIG. 108, one end of the cushion assembly 604 includes a plug 622 and the other end includes a swivel elbow 612. The positions of the swivel elbow 612 and plug 622 are preferably interchangeable, for example, depending on the patient's typical sleeping position. Air transfer tube 606 is joined with swivel elbow 612. The air transfer tube 606 includes a swivel connector 607, which also includes an end 609 that includes a swivel connector 607. The end 609 includes a pressurized gas source.

  As shown in FIG. 108, the elbow 612 is angled around the cushion assemblies 604-120 ′. This helps to keep the tube slightly outside the line in order to keep the tube bending point as close to the face as possible to minimize pressure drop. However, the elbow typically has a 90 ° bend, as shown in FIGS. 109 and 110, for example.

  FIG. 109 is a schematic perspective view of the mask assembly 600 shown in FIG. 108, but shows only the yoke 608 of the headgear 602 without a strap. According to the fifth exemplary embodiment, the yoke 608 may comprise a yoke ring 610. As shown in FIG. 109, the cushion assembly may be adjustably rotated relative to the headgear to a position that best fits the patient. In FIG. 109, the ring 610 of the headgear yoke 608 includes an alignment index 611a, and the cushion includes a plurality of alignment markers 611b that can be selectively aligned with the index 611a.

  FIG. 110 is a cross-sectional view of a portion of the cushion assembly 604. In particular, the cushion assembly 604 includes a frame 616 that supports the cushion 617. The frame 616 includes first connector portions 618 that are attached to both ends of the frame 616 and / or the cushion 617. Each first connector portion 618 includes or is provided with a sealing ring 614. Both the sealing ring and the plug are connected to the first connector portion 618 or are examples of a second connector portion provided for it otherwise. As shown in FIG. 110, the left hand side of the mask assembly includes a plug 622, and the right hand side of the mask assembly includes a swivel elbow 612, ie, views of the opposite configuration are shown in FIGS.

  FIG. 110 shows that a plurality of exhaust ports 619 configured to reduce the noise of each of the cushions 617 is provided. Two possible opening cross sections are shown in FIGS. 110-1 and 110-2. In FIG. 110-2, end 617a displaces the flow (ie, the forming seam) that creates any potential noise outside the main air path through the vent hole. In other words, the forming seam moves from a position where noise is likely to be generated to a position where noise is hardly generated.

  FIG. 110A is a partial cross-sectional view showing the interaction of the sealing ring 614, the first connector portion 618 and the plug 622. In particular, the seal ring 614 includes first and second protrusions 624 and 626, respectively. The first protrusion 624 interacts with a groove 618a formed in the first connector portion 618 for sealing and / or locking purposes. The second protrusion 626 interacts with a groove 628 formed in the plug 622 for sealing and / or locking purposes. As shown in FIG. 110A, each sealing ring 614 includes a groove 630 for receiving one of the rings 610 of the yoke 608, respectively. In FIG. 110A, the yoke 608 is not shown.

  110B is an enlarged partial cross-sectional view of the right hand side mask assembly 600 of FIG. A first end 612a of the swivel elbow 612 is inserted into and received within the first connector portion 618. The first end 612a may include a large head portion that prevents inadvertent removal of the swivel elbow 612 from the assembly. The front end 612a may include at least one slot 613 that allows a large head portion to reduce its diameter upon insertion by elastic bending. Preferably there are a plurality of such slots, for example four slots. The sealing ring 614 may include first and second protrusions 624, 626 as described above. In this case, the second protrusion 626 interacts with the outer periphery of the swivel elbow 612 by friction to provide a seal. Further, the swivel elbow 612 may include a groove or other structure for receiving the second protrusion 626.

  FIG. 110B schematically illustrates that the swivel elbow 612 and the sealing ring 614 include a sweeper stop 631. For example, the sweep belt stop 631 may be formed as a part of the yoke 608.

  Alternatively or in addition, as shown in FIG. 111, the swivel elbow 612 may include a ring 633 that includes a protrusion 634. The sealing ring 614 may be modified to include a sweeper stop 632. Accordingly, the protrusion 634 may be rotated along the swivel elbow 612 until the protrusion 634 contacts the sweeper stop 632. Accordingly, the movement of the air transfer tube 606 is limited to a predetermined range, for example, about 220 ° to 300 °, preferably 250 ° to 270 °, and is thus undesirable between the air transfer tube and the patient. Minimize or avoid contact.

  FIG. 112 is a partial cross-sectional view of the assembly of the frame, first connecting portion 618, yoke 608, sealing ring 614 and plug 622. FIG. 112 shows the plug 622 inserted into the right hand side of the cushion assembly 604, as shown in FIG.

  FIG. 113 shows an alternative embodiment of the present invention in which the plug and sealing ring are formed of a single integral piece. As shown in FIG. 113, the sealing ring 636 includes a flange portion 638 that substantially follows the contour of the yoke 608. This is best illustrated in the cross-sectional view of FIG. 110 where the sealing ring 614 and the yoke 608 are positioned in close proximity to each other.

  The seventh exemplary embodiment allows for improved separation of the air transfer tube 606 and / or the swivel elbow 612 from the cushion assembly 604. This embodiment also allows selection of tube path settings that are above or below the cushion assembly 604 or from the left or right hand side. Similarly, this embodiment is unobtrusive and fairly lightweight. It also has fewer parts than the previous embodiment and is easy to manufacture, assemble and clean.

  The swivel elbow 612 may include a quick release mechanism (not shown). The swivel elbow 612 can be fitted and snapped onto the mask frame 616 as shown in FIG. 110B. This structure allows free swiveling around the frame 616 between predetermined ranges, thereby ensuring that the tube is not in an uncomfortable position with respect to the head and pillow.

  Seal ring 614 is configured to cooperate with the elbow swivel 612 geometry. Further, the sealing ring 614 may be connected to the ring 610 of the yoke 608. Seal ring 614 may be permanently connected to ring 610, for example, via co-molding. For example, the swivel stop 631 of FIG. 110B can be formed as part of the ring 610. The first connector portions 618 on either side of the frame 616 may rotate relative to the sealing ring 614, thereby positioning the cushion assembly 604 accordingly. Seal ring 614 preferably seals swivel elbow 612 with minimal friction. Each sealing ring 614 is large enough to be manipulated by a patient, particularly a non-dexterous patient.

  Plug 622 may be a pressure fit within sealing ring 614. The plug 622 may be configured to be press-fitted within the frame. Plug 622 is manufactured from a hard polymer, such as, for example, polypropylene. A recess (not shown) may be formed to remove the plug 622. The plug functions to seal the frame and cushion assembly on the opposite side of the air transfer tube. The plug 622 is large enough to be manipulated by the patient, even for patients who are not dexterous.

  Tube 606 may be permanently attached to the end of swivel elbow 612. However, a press friction connection is also appropriate. The length of the tube is, for example, between 200 mm and 400 mm, preferably between 250 mm and 350 mm, or any other length that does not block the patient's face.

  As shown in FIGS. 110B and 111, the yoke 608 and the ring 614 may each be configured to limit the angle or rotational movement of the swivel elbow 612 relative to the first connector portion 618. Further, the headgear assembly and / or the yoke may have a tube holding function for controlling the position of the tube. For example, a simple VELCRO® may be provided along some portion of the headgear to limit the movement of the air transfer tube.

  In another embodiment shown in FIGS. 108A and 108B, the tube retainer 900 includes a first portion 902 that is connected or attached to one of the headgear straps. For example, the first portion 902 is in the form of a loop attached to a portion 904 of the headgear strap shown in FIG. Attachment is accomplished by screwing the headgear strap 904 through the first portion 902 before the headgear strap 904 is screwed through the headgear buckle 906. The retainer 900 includes a second portion 908 provided or attached to the first portion 902. The second portion 908 is made of a resilient plastic that retains the shape shown in FIG. 108A and a gap 910 is defined between the two ends 912 of the second portion 908. The gap 910 is dimensioned smaller than the diameter of the air transfer tube 606 so as to hold the tube 606 with high reliability. Alternatively, the second portion 908 is a VELCRO® loop and may include hooks and loops that end 912 mates with. As shown in FIGS. 108A and 108B, the second portion is one or two for receiving ribs 916 (FIG. 108) of the air transfer tube 606, thereby preventing axial sliding of the tube 606. A plurality of slots 914 may be provided. In this configuration, the tube 606 can be reliably held in position on the patient's head.

  FIG. 108C shows a plan view of a tube retainer where like numerals relate to like parts. In FIG. 108C, exemplary dimensions of the tube retainer are shown. Note that these dimensions are exemplary only, and the dimensions can be varied up to ± 20% of the values shown here.

  The nasal assemblies 10, 210, 310, 410, 510, 600 described above and below have several advantages. For example, the nasal assemblies 10, 210, 310, 410, 510 are inconspicuous due to their small overall dimensions and weight. The nasal assembly 10, 210, 310, 410, 510, 600 provides a high level of comfort because minimal force applied to the patient's nose and contact with the bridge is removed. The nasal assembly 10, 210, 310, 410, 510, 600 is easy to use and includes minimal parts and adjustments, for example, the intake conduit covers the patient's head upwards or the patient's It can be easily adjusted to extend downward under the jaw. The pressure supply unit can be easily attached to and detached from the connector without changing the setting of the headgear. The nasal assemblies 10, 210, 310, 410, 510, 600 also allow for a greater nozzle range of motion to accommodate a wide range of patients. That is, the nozzle can be rotated relative to the patient's face by rotating the frame relative to the headgear assembly. The strap tension does not increase because the contact area with the face is small. The headgear provides stability, for example, a yoke maintains the position of the mask assembly on the face. The headgear adjustment is configured so that the force required to tighten the strap is not applied to the patient's face. For example, the straps can be pulled in opposite directions on the head to offset each other. Finding a balance between performance and comfort is relatively easy. Also, the weight of the mask, the noise level, and / or the number of parts are reduced.

  An annex containing the accompanying drawings and descriptions of various aspects of the preferred embodiment of the present invention is included in US Provisional Application No. 60 / 529,696, filed Dec. 16, 2003, the entire contents of which are hereby incorporated by reference. Incorporated herein by reference. Although the drawings or appendices include dimensions, these dimensions are merely exemplary and can be changed without departing from the scope of the present disclosure.

  FIG. 114 shows an exploded view of another embodiment of the present invention. In this embodiment, the cushion assembly 604 is similar to that shown in FIGS. 108-109 and the swivel elbow 612 has been described in connection with FIGS. 108, 110B and 111. The yoke 608 includes a wide portion 608a configured to engage a corresponding wide portion 630a that is adjacent to or formed as part of the groove. The yoke 608 is also configured to receive the ear 638 of the sealing ring 614. In a further embodiment, the yoke and the sealing ring are integrally formed. Further, the yoke and the headgear can be integrally formed instead of using sewing. As seen in FIG. 115, the yoke 608 and the sealing ring 614 can be snapped onto each other via the shoulder 621. This arrangement prevents the yoke and ring from rotating relative to each other. FIG. 115 also shows the general position of the yoke bend point P that allows a good fit with the patient.

  116 and 126 show further views of the embodiment shown in FIGS. 114 and 115. FIG. Another aspect of this configuration is that the ring 610 of the yoke 608 is angularly biased relative to the main body 609 of the yoke 608. 116 and 110 are compared, for example, the main body 609 in FIG. 116 is twisted. For example, the front side surface 609a in FIG. 116 is disposed on the outer side in the lateral direction in FIG. 116 as compared with the rear side surface 609b. This configuration helps to bias the bottom portion of the yoke 608 towards the patient's face so that the yoke more closely follows the contours of the patient's face.

  127-130 illustrate a further embodiment of the present invention. This embodiment is similar to that shown and described in FIGS. However, there are two main differences. First, the elbow 612 rotates 360 ° freely within the sealing ring 614. As shown in the partially exploded view of FIG. 128, the sealing ring 614 does not include the stop 632 and the elbow 612 does not include the protrusion 634 compared to that shown in FIG.

  Second, as shown in FIG. 129, the sealing ring 614 includes a cap 614a that can be selectively removed and inserted. In other words, the plug 622 of FIG. 119 is made with two parts instead of one. The cap 614a may include an exhaust port instead of or supplementing the exhaust port disposed on the cushion. FIG. 130 shows a partially exploded view of the cap 614a. Because the sealing rings 614 on both sides of the nozzle assembly are identical, the cap 614a and elbow 612 can be removed and replaced if the patient chooses to have the elbow 612 routed to the left or right. This can be done while using the mask assembly on the patient. The elbow 612 can also be removed to allow patient mobility.

  131-133 illustrate an elbow 612 according to another embodiment. Compared to the elbow 612 shown in FIG. 114, the elbow 612 of FIGS. 131 to 133 is formed with one, preferably a pair of key-like openings 613. The elbow may be made of polypropylene, such as “Borealis” or polyester. The shape of the opening allows for improved retention and force removal when the elbow is in place and removed.

  Also, the nozzle assembly and / or associated cushion may be replaced with a nasal mask and / or nasal cushion. See, eg, FIGS. 134 and 135. FIG. 134 is a configuration where the frame includes opposing openings or first connector portions (eg, tubular extensions), each of which includes a sealing ring as described above. The sealing ring 500 is configured to include a separate or integral plug for closing one opening or first connector portion of the frame, while another sealing ring is open / first in the other frame. 1 is configured to engage a connector portion and receive a swivel elbow. Of course, the position of the elbow and plug may be exchanged according to patient preference. In FIG. 135, an elbow is provided at the front of the mask frame, such as a ReMed VISTA mask. On the other hand, the opening / first connector part comprises a sealing ring with a plug. Of course, in each embodiment, the frame, elbow, and / or sealing ring may include a suitable exhaust for exhausting exhaled air from the breathing chamber.

  Thus, it can be appreciated that aspects of the present invention have been fully and effectively achieved. The particular embodiments described above are provided to illustrate the structural and functional principles of the present invention and are not intended to be limiting. On the contrary, the invention is intended to cover all modifications, changes, and substitutions that fall within the spirit and scope of the detailed description.

10, 210, 310, 410, 510 Nose assembly 12 Nasal cavity 14 Nose 16, 216, 316, 416, 516, 616 Frame 18, 218, 318, 418, 518, 618 Nozzle assembly 20, 220, 320, 420, 520 Headgear assembly 22, 222, 322, 422 Connection assembly 24, 224, 324, 424, 524 First connector portion 26, 26 ', 226, 326, 426, 526, 526' Second connector portion 28, 228, 328 428, 528 Main body 30, 230, 330, 430 Central opening 32, 232, 332, 432, 532 Side frame member 34 Connection section 36 Marking section 37 Groove, slot 38, 238 Arm 40, 240, 340 Rib portion 42 44 teeth 48, 248, 348, 448 548 Bottom part, gusset part 50, 250, 350, 450, 550 Nozzle 52, 452 Side wall 54 Central wall 56 First part 58 Second part 60, 260, 360, 460, 560 Front part 62, 262, 362, 462, 562 Rear portion 64, 72, 264, 364, 464, 564 Conduit 66, 266, 366, 566 Recess 68, 70, 71, 270 Crossbar 72, 74, 76, 86, 88, 90, 272, 274, 286, 288, 290, 374, 386, 472, 474, 545, 574, 586, 588 Conduit 78 Exhaust port 84, 284, 484, 584 Flow generator connector 90 Connector, Conduit 92, 292, 392, 492 Side Part 94, 294, 394, 494 Rear part 96, 296, 396, 496 side Strap 98, 298, 398, 498, 598 Upper strap 100, 299, 399, 499, 599 Rear strap 102 Buckle 219, 319 Main body 221, 321 End portion 278, 223, 323 Opening 291, 393 Holding strap 293 Holding prong 384 Angle connector, flow generator connector 446 Rim 461 Arm member 463 Lug 465 Projection 466 Recess, Crossbar 519 Upper contour portion 521 Lower contour portion 526a Tab 530 Clip 542 Angle connector 542 'Elbow connector 542a Keyway 542b Protrusion 544 Escape groove 546 Shoulder portion 552 Elongated connector 554, 556 Locking member 561 Groove 565, 567 Passage 570 Buckle 571, 572 Locking portion 576 Tab 5 8 Curved surface 580, 580 'Yoke 581 Holding member 590 Swivel 604 Nozzle or cushion assembly 630 Clip 10, 210, 310 Nose assembly 18, 218 Gusseted portion 20, 22, 220, 222, 320, 322, 826, 832 , 834, 836, 840, 844 Nozzle, nose pillow 25 Headgear connector 26, 28, 226, 228 Side wall 30, 230 First portion 32, 230 Second portion 34, 234 Central conduit 236, 238, 336 Intake conduit 40, 42, 44, 244 Intake connector 46 Upper portion 52, 54 End section 56 Groove 60, 66, 68, 70 Opening 62, 262 Exhaust port 64 Protrusion 72 Connection structure 74, 76, 90 Conduit portion 78 Flange 80, 82 Passage 84, 86, 88 Connector 20 Headgear assembly 207 Strap 208 Head cloth 411, 415 Support part 413 First part 417 Second part 419 Bridge part 421 Cushion 423 Headgear connector part 425 Headgear strap 600, 650, 690, 702, 750, 780 Mask assembly 602, 652 692, 752, 782, 792, 800 Headgear assembly 604, 654, 694, 794 Nasal cushion assembly, parietal strap 606 Air transfer tube 607 Swivel connector 608 Yoke 609 End 611a Index 611b Marker 612 Swivel elbow 622 Plug 656, 696 Back Straps 658, 732, 734, 760, 788, 792, 808, 810 Tube 660 Ends 664, 708, 736, 7 8,820 Support frame 666 Lower part 668, 738 Cushion 670 Central part 672, 710 Upper part 674, 714, 804, 822 Support arm 676, 678, 715 Connector slot 680, 826 Nozzle 682, 824 Plenum chamber 698, 758, 783, 802 Arm strap 700, 702, 790 Connector 724, 726 Crossbar strap 728 Branch 754, 784 Rear strap 756, 786 Front head strap 759 Yoke member 767 Arm 766, 770 Connector portion 806 Interchange

Claims (21)

A common base defining a side wall and a central wall and a pair of nozzles provided on the central wall;
The nozzle and the common base are formed of a single piece of silicone;
Each nozzle has a first part in the form of a shaft and has a second part in the form of a head supported by the shaft;
The shafts are provided in the central wall, each communicating with a discharge opening in the central wall;
The head is essentially in the form of a hollow frustoconical shape with a narrow tip portion that enters the nasal cavity of the patient's nose and a relatively wide portion that engages the peripheral region of the nostril opening edge in a sealing manner. Have
Each said axis has a reduced width with respect to a relatively wide portion of said head;
The side wall of the common base is a cushion including an outer surface for contacting the user's upper lip when in use.   The cushion according to claim 1, wherein the central wall has a wall that smoothly transitions to a wall portion that forms the shaft. The cushion according to claim 1, further comprising a discharge port including a plurality of openings for CO ₂ outflow.   The cushion according to claim 1, wherein each of the shafts has an hourglass shape extending between the central wall and the head. The cushion according to claim 1, wherein the outer surface includes a slightly recessed shape.   The cushion according to claim 1, wherein the cushion is asymmetric about an axis passing transversely to the opening of the nozzle.   The cushion according to claim 1, wherein the central wall includes a half of an angle shaped such that a blade angle between the nozzles is in a range of 70 to 155 °. The cushion according to claim 7, wherein the blade angle is in a range of 135 to 155 °. The cushion according to claim 7, wherein the blade angle is in a range of 70 to 90 °.   The cushion according to claim 7, wherein the opening of each nozzle has an elliptical shape having a major axis and a minor axis. The ellipse ratio is 0 . The cushion according to claim 10, wherein the cushion is 7. Each head having a longitudinal axis, a cushion of claim 10 wherein the longitudinal axis of the pair of the head, characterized in that the angle enclosed by focusing forms a 3 5 °. Each head defines a sealed area surrounded by a border extending from the inside of the base of the head toward the outside of the head, the border extending about half of the height of the outer head. The cushion according to claim 1. The cushion according to claim 13, wherein the height of the head of each nozzle is 9 mm.   The cushion of claim 1, wherein the shaft is designed to act as a spring structure against the patient's nostril.   16. The cushion according to claim 15, wherein, in use, the spring structure is pre-installed before introducing a compressed gas to provide a sealing force to the user.   The cushion according to claim 1, wherein the nozzle is placed near or slightly in contact with the user's nose during use.   2. The cushion according to claim 1, wherein a side wall and a head of the shaft are recessed. The front wall of the base is designed to contact the immediate back of the user's nose, and in use, the resultant force is between the user's eyes and ears from the immediate back of the user's head. The cushion according to claim 1, wherein the cushion is directed along a line extending to a rear portion of the cushion.   The cushion of claim 1, wherein the central wall is shaped to accommodate a patient's septum.   The cushion according to claim 1, wherein the base includes an alignment marker, and the alignment marker can be selectively matched with an alignment index disposed in proximity to the alignment marker.